Embedded Files
Global species checklist for Viola. Provisional, unpublished names are not included. Accepted species are indicated in boldface. Out of a total of 1796 cited taxa, 664 are extant and accepted at the species level, and 4 are fossil.
Crocion nuttallii (Pursh) Nieuwl. & Lunell—synonym of Viola nuttallii (sect. Chamaemelanium)
Crocion vallicola (A. Nelson) Nieuwl. & Lunell—synonym of V. vallicola var. vallicola (sect. Chamaemelanium)
Erpetion hederaceum (Labill.) G. Don.—synonym of V. hederacea (sect. Erpetion)
Erpetion reniforme Sweet—synonym of V. banksii (sect. Erpetion)
Ionidium stipulare (Sw.) Schult.—synonym of V. stipularis (sect. Leptidium)
Lophion aduncum (Sm.) Nieuwl. & Lunell—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Lophion rostratum (Pursh) Nieuwl. & Kaczmarek—synonym of V. rostrata (sect. Viola, subsect. Rostratae)
Lophion rugulosum (Greene) Lunell—synonym of V. rugulosa (sect. Chamaemelanium)
Lophion striatum (Aiton) Nieuwl. & Kaczmarek—synonym of V. striata (sect. Viola, subsect. Rostratae)
Mnemion arvense (Murray) Nieuwl. & Kaczmarek—synonym of V. arvensis (sect. Melanium, subsect. Bracteolatae)
Viola abbreviata J. M. Watson & A. R. Flores—(sect. Sempervivum)
Viola aberrans (Greene ex W. Stone) House—hybrid (V. communis × V. fimbriatula; sect. Nosphinium, subsect. Borealiamericanae)
Viola abulensis Fern. Casado & Nava—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola abundans House—hybrid (V. fimbriatula × V. sagittata), synonym of V. subsagittata (sect. Nosphinium, subsect. Borealiamericanae)
Viola abyssinica Steud. ex Oliv.—(sect. Abyssinium)
Viola abyssinica var. eminii Engl.—synonym of V. eminii (sect. Abyssinium)
Viola abyssinica var. ulugurensis Engl.—synonym of V. eminii (sect. Abyssinium)
Viola acanthophylla Leyb. ex Reiche—(sect. Grandiflos)
Viola acanthophylla var. tontalensis W. Becker—synonym of V. flos-idae (sect. Triflabellium)
Viola accrescens Klokov—synonym of V. pumila (sect. Viola, subsect. Rostratae)
Viola achyrophora Greene—synonym of V. suecica subsp. repens (sect. Plagiostigma, subsect. Stolonosae)
Viola acrocerauniensis Erben—(sect. Melanium, subsect. Bracteolatae)
Viola acuminata Ledeb.—(sect. Viola, subsect. Rostratae)
Viola acutifolia (Kar. & Kir.) W. Becker—(sect. Chamaemelanium)
Viola acutilabella Hayata—synonym of V. nagasawae (sect. Plagiostigma, subsect. Diffusae)
Viola adenothrix Hayata—(sect. Plagiostigma, subsect. Stolonosae)
Viola adriatica Freyn—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola adulterina Godr.—hybrid (V. alba × V. hirta; sect. Viola, subsect. Viola)
Viola adunca Sm.—(sect. Viola, subsect. Rostratae)
Viola adunca Sm. subsp. adunca—(sect. Viola, subsect. Rostratae)
Viola adunca subsp. ashtoniae M. S. Baker—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola adunca subsp. bellidifolia (Greene) H. E. Ballard, ined.—(sect. Viola, subsect. Rostratae)
Viola adunca var. bellidifolia (Greene) H. D. Harrington—synonym of V. adunca subsp. bellidifolia (sect. Viola, subsect. Rostratae)
Viola adunca var. minor (Hook.) Fernald—synonym of V. labradorica (sect. Rostratae)
Viola aduncoides Á. Löve & D. Löve—(sect. Viola, subsect. Rostratae)
Viola aethnensis (DC.) Strobl—(sect. Melanium, subsect. Bracteolatae)
Viola aethnensis (DC.) Strobl subsp. aethnensis—(sect. Melanium, subsect. Bracteolatae)
Viola aethnensis subsp. messanensis (W. Becker) Merxm. & Lippert—(sect. Melanium, subsect. Bracteolatae)
Viola aethnensis subsp. splendida (W. Becker) Merxm. & Lippert—(sect. Melanium, subsect. Bracteolatae)
Viola aetolica Boiss. & Heldr.—(sect. Melanium, subsect. Bracteolatae)
Viola affinis Leconte—(sect. Nosphinium, subsect. Borealiamericanae)
Viola affinis var. subarctica J. Rousseau—synonym of V. affinis (sect. Nosphinium, subsect. Borealiamericanae)
Viola aizoon Reiche—(sect. Sempervivum)
Viola alabamensis Pollard—synonym of V. villosa (sect. Nosphinium, subsect. Borealiamericanae)
Viola alaica Vved.—(sect. Plagiostigma, subsect. Patellares)
Viola alata Burgersd.—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola alba Besser—(sect. Viola, subsect. Viola)
Viola alba Besser subsp. alba—(sect. Viola, subsect. Viola)
Viola alba subsp. cretica (Boiss. & Heldr.) Marcussen—(sect. Viola, subsect. Viola)
Viola alba subsp. dehnhardtii (Ten.) W. Becker—(sect. Viola, subsect. Viola)
Viola alba subsp. scotophylla (Jord.) Nyman—synonym of V. alba subsp. alba (sect. Viola, subsect. Viola)
Viola alba subsp. sintenisii (W. Becker) W. Becker—synonym of V. sintenisii (sect. Viola, subsect. Viola)
Viola alba subsp. thessala (Boiss. & Spruner) Hayek—synonym of V. alba subsp. alba (sect. Viola, subsect. Viola)
Viola albanica Halácsy—(sect. Melanium, subsect. Bracteolatae)
Viola albida Palib.—(sect. Plagiostigma, subsect. Patellares)
Viola albimaritima Vl. V. Nikitin (pro hybr.)—synonym of V. suecica subsp. suecica (sect. Plagiostigma, subsect. Stolonosae)
Viola albovii Vl. V. Nikitin—hybrid (V. oreades × V. orthoceras; sect. Melanium, subsect. Bracteolatae)
Viola alburnica Ricceri & Moraldo—synonym of V. aethnensis subsp. splendida (sect. Melanium, subsect. Bracteolatae)
Viola alexandrowiana (W. Becker) Juz.—(sect. Plagiostigma, subsect. Patellares)
Viola alexejana Kamelin & Junussov—(sect. Plagiostigma, subsect. Patellares)
Viola aliceae M. S. Baker—synonym of V. umbraticola (sect. Viola, subsect. Rostratae)
Viola alisoviana f. intermedia (Kitag.) Taken.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola alisoviana Kiss—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola allchariensis Beck—(sect. Melanium, subsect. Bracteolatae)
Viola allchariensis Beck subsp. allchariensis—synonym of V. allchariensis (sect. Melanium, subsect. Bracteolatae)
Viola allchariensis subsp. gostivarensis W. Becker & Bornm.—synonym of V. gostivariensis (sect. Melanium, subsect. Bracteolatae)
Viola allegheniensis L. K. Henry, non Roem. & Schult.—unresolved
Viola alliariifolia Nakai—(sect. Chamaemelanium)
Viola allochroa Botsch.—(sect. Chamaemelanium)
Viola alpina Jacq.—(sect. Melanium, subsect. Bracteolatae)
Viola alpina Ruiz & Pav. ex Ging.—synonym of V. pygmaea (sect. Sempervivum)
Viola altaica Ker Gawl.—(sect. Melanium, subsect. Bracteolatae)
Viola altaica subsp. oreades (M. Bieb.) W. Becker—synonym of V. oreades (sect. Melanium, subsect. Bracteolatae)
Viola amamiana Hatus.—(sect. Plagiostigma, subsect. Diffusae)
Viola ambigua Waldst. & Kit.—(sect. Viola, subsect. Viola)
Viola amiatina Ricceri & Moraldo—synonym of V. etrusca (sect. Melanium, subsect. Bracteolatae)
Viola amorphophylla Pollard—synonym of V. fimbriatula (sect. Nosphinium, subsect. Borealiamericanae)
Viola ampliata Greene—synonym of V. pedata subsp. pedata (sect. Nosphinium, subsect. Pedatae)
Viola amurica W. Becker—(sect. Plagiostigma, subsect. Bilobatae)
Viola anagae Gilli—(sect. Viola, subsect. Rostratae)
Viola angellae Pollard—hybrid (V. palmata var. triloba × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola angkae Craib—(sect. Chamaemelanium)
Viola angustifolia Phil.—(sect. Grandiflos)
Viola angustistipulata C. C. Chang—synonym of V. tienschiensis (sect. Plagiostigma, subsect. Patellares)
Viola anitae J. M. Watson—(sect. Rhizomandinium)
Viola annamensis Baker f.—(sect. Plagiostigma, subsect. Australasiaticae)
Viola apoensis Elmer [“apoense”]—(sect. Plagiostigma, subsect. Diffusae)
Viola appalachiensis L. K. Henry—(sect. Viola, subsect. Rostratae)
Viola araucaniae W. Becker—(sect. Subandinium)
Viola arborescens L.—(sect. Xylinosium)
Viola arbuscula Phil.—synonym of V. philippii (sect. Rosulatae)
Viola arcuata Blume—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola arcuata Miq., non Blume—synonym of V. javanica (sect. Plagiostigma, subsect. Stolonosae)
Viola arcuata Ooststr. & H. J. Lam, non Blume—synonym of V. kjellbergii (sect. Plagiostigma, subsect. Stolonosae)
Viola arenaria DC.—synonym of V. rupestris subsp. rupestris (sect. Viola, subsect. Rostratae)
Viola argenteria Moraldo & Forneris—synonym of V. nummulariifolia (sect. Melanium, subsect. Pseudorupestres)
Viola argentina W. Becker—(sect. Rosulatae)
Viola arguta Humb. & Bonpl. ex Schult.—(sect. Leptidium)
Viola arguta subsp. meridionalis W. Becker—synonym of V. arguta (sect. Leptidium)
Viola arguta subsp. typica W. Becker—synonym of V. arguta (sect. Leptidium)
Viola arguta var. glaberrima W. Becker—synonym of V. arguta (sect. Leptidium)
Viola arguta var. meridionalis (W. Becker) L. B. Sm. & A. Fernández—synonym of V. arguta (sect. Leptidium)
Viola arisanensis W. Becker—synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola arizonica Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola arsenica Beck—(sect. Melanium, subsect. Bracteolatae)
Viola arvensioides Strobl—synonym of V. hymettia (sect. Melanium, subsect. Bracteolatae)
Viola arvensis Murray—(sect. Melanium, subsect. Bracteolatae)
Viola arvensis Murray subsp. arvensis—synonym of V. arvensis (sect. Melanium, subsect. Bracteolatae)
Viola arvensis subsp. megalantha Nauenb.—synonym of V. arvensis (sect. Melanium, subsect. Bracteolatae)
Viola asterias Hook. & Arn.—synonym of V. pusilla (sect. Subandinium)
Viola asterias var. atacamensis Phil.—synonym of V. pusilla (sect. Subandinium)
Viola asterias var. caulescens Phil.—synonym of V. pusilla (sect. Subandinium)
Viola asterias var. depauperata Phil.—synonym of V. pusilla (sect. Subandinium)
Viola asterias var. genuina Reiche—synonym of V. pusilla (sect. Subandinium)
Viola asterias var. glabra Phil. ex Reiche—synonym of V. pusilla (sect. Subandinium)
Viola athois W. Becker—(sect. Melanium, subsect. Bracteolatae)
Viola atlantica Britton—synonym of V. brittoniana (sect. Nosphinium, subsect. Borealiamericanae)
Viola atriplicifolia Greene—synonym of V. purpurea subsp. atriplicifolia (sect. Chamaemelanium)
Viola atropurpurea Leyb.—(sect. Sempervivum)
Viola atroviolacea—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola aurantiaca Leyb.—(sect. Rosulatae)
Viola aurata Phil.—(sect. Subandinium)
Viola aurea Kellogg—(sect. Chamaemelanium)
Viola aurea Kellogg subsp. aurea—(sect. Chamaemelanium)
Viola aurea subsp. arizonensis M. S. Baker—(sect. Chamaemelanium)
Viola aurea subsp. mohavensis M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola aurea var. venosa (S. Watson) S. Watson—synonym of V. purpurea subsp. venosa (sect. Chamaemelanium)
Viola auricolor Skottsb.—(sect. Sempervivum)
Viola auricula Leyb.—(sect. Subandinium)
Viola auritella W. Becker—synonym of V. sacculus (sect. Sempervivum)
Viola austiniae Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola austrosinensis Y. S. Chen & Q. E. Yang—(sect. Plagiostigma, subsect. Australasiaticae)
Viola austroussuriensis (W. Becker) Kom.—synonym of V. acuminata subsp. grandistipulata (sect. Viola, subsect. Rostratae)
Viola avatschensis—synonym of V. crassa subsp. avatschensis (sect. Chamaemelanium)
Viola awagatakensis T. Yamaz., I. Ito & Ageishi—synonym of V. rostrata (sect. Viola, subsect. Rostratae)
Viola babunensis Erben—(sect. Melanium, subsect. Bracteolatae)
Viola bachtschisaraensis Vl. V. Nikitin—hybrid (V. alba × V. caspia; sect. Viola)
Viola baicalensis W. Becker—synonym of V. variegata subsp. primorskajensis (sect. Plagiostigma, subsect. Patellares)
Viola bakeri Greene—(sect. Chamaemelanium)
Viola balansae Gagnep.—(sect. Plagiostigma, subsect. Australasiaticae)
Viola balcanica Delip.—synonym of V. dacica (sect. Melanium, subsect. Bracteolatae)
Viola balsaminoides Gardn.—synonym of V. cerasifolia (sect. Leptidium)
Viola baltica W. Becker—hybrid (V. canina × V. riviniana; sect. Viola, subsect. Rostratae)
Viola bambusetorum Hand.-Mazz.—(sect. Plagiostigma, subsect. Patellares)
Viola bangiana W. Becker—synonym of V. boliviana (sect. Leptidium)
Viola bangii Rusby—(sect. Sempervivum)
Viola banksii K. R. Thiele & Prober—(sect. Erpetion)
Viola baoshanensis W. S. Shu, W. Liu & C. Y. Lan—(sect. Plagiostigma, subsect. Patellares)
Viola barhalensis G. Knoche & Marcussen—(sect. Viola, subsect. Viola)
Viola barkalovii Bezd.—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola barroetana W. Schaffn. ex Hemsl.—(sect. Chamaemelanium)
Viola bavarica Schrank—hybrid (V. reichenbachiana × V. riviniana; sect. Viola, subsect. Rostratae)
Viola baxteri House—(sect. Nosphinium, subsect. Borealiamericanae)
Viola beamanii Calderón—(sect. Nosphinium, subsect. Mexicanae)
Viola beati J. M. Watson & A. R. Flores—(sect. Xylobasis)
Viola beckeriana J. M. Watson & A. R. Flores—(sect. Sempervivum)
Viola beckiana Beck subsp. beckiana—synonym of V. beckiana (sect. Melanium, subsect. Bracteolatae)
Viola beckiana Fiala ex Beck—(sect. Melanium, subsect. Bracteolatae)
Viola beckiana subsp. pascua (W. Becker) Trinajstić—synonym of V. eximia subsp. eximia (sect. Melanium, subsect. Bracteolatae)
Viola beckwithii Torr. & A. Gray—(sect. Chamaemelanium)
Viola beckwithii Torr. & A. Gray var. beckwithii—(sect. Chamaemelanium)
Viola beckwithii var. cachensis C. P. Sm.—(sect. Chamaemelanium)
Viola beckwithii var. trinervata Howell—synonym of V. trinervata (sect. Chamaemelanium)
Viola begoniifolia Benth.—synonym of V. stipularis (sect. Leptidium)
Viola behboudiana Rech. f. & Esfand.—(sect. Sclerosium)
Viola bellidifolia Greene—synonym of V. adunca subsp. bellidifolia (sect. Viola, subsect. Rostratae)
Viola belophylla H. Boissieu—(sect. Plagiostigma, subsect. Patellares)
Viola bernardii (Greene) Greene—hybrid (V. pedatifida × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola bertolonii Pio—(sect. Melanium, subsect. Bracteolatae)
Viola bertolonii Pio subsp. bertolonii—synonym of V. bertolonii (sect. Melanium, subsect. Bracteolatae)
Viola bertolonii subsp. messanensis (W. Becker) A. Schmidt—synonym of V. aethnensis subsp. messanensis (sect. Melanium, subsect. Bracteolatae)
Viola bethkeana Borbás—hybrid (V. reichenbachiana × V. rupestris; sect. Viola, subsect. Rostratae)
Viola betonicifolia f. pubescens H. Hara—synonym of V. trichopetala (sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia Sm.—(sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia Sm. subsp. betonicifolia—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia subsp. australis W. Becker—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia subsp. dielsiana W. Becker—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia subsp. jaunsariensis (W. Becker) H. Hara—synonym of V. tienschiensis (sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia subsp. nepalensis (Ging.) W. Becker—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia subsp. novaguineensis D. M. Moore—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola betonicifolia var. oblongosagittata (Nakai) F. Maek. & T. Hashimoto—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola bezdelevae Vorosch.—synonym of V. kitamiana (sect. Chamaemelanium)
Viola bhutanica H. Hara—(sect. Plagiostigma, subsect. Patellares)
Viola bicolor Pursh—synonym of V. rafinesquei (sect. Melanium, subsect. Cleistogamae)
Viola bicolor Reiche—synonym of V. montagnei (sect. Rosulatae)
Viola biflora L.—(sect. Chamaemelanium)
Viola biflora L. var. biflora—synonym of V. biflora (sect. Chamaemelanium)
Viola biflora subsp. carlottae Calder & Roy L. Taylor—synonym of V. crassa (sect. Chamaemelanium)
Viola biflora var. acuminata Maxim.—synonym of V. biflora (sect. Chamaemelanium)
Viola biflora var. acutifolia H. Boissieu—synonym of V. szetschwanensis (sect. Chamaemelanium)
Viola biflora var. acutifolia Kar. & Kir.—synonym of V. acutifolia (sect. Chamaemelanium)
Viola biflora var. carlottae (Calder & Roy L. Taylor) B. Boivin—synonym of V. crassa (sect. Chamaemelanium)
Viola biflora var. ciliicalyx H. Boissieu—synonym of V. szetschwanensis (sect. Chamaemelanium)
Viola biflora var. hirsuta W. Becker—synonym of V. biflora (sect. Chamaemelanium)
Viola biflora var. nudicaulis W. Becker—synonym of V. biflora (sect. Chamaemelanium)
Viola biflora var. platyphylla Franch.—synonym of V. confertifolia (sect. Chamaemelanium)
Viola biflora var. rockiana (W. Becker) Y. S. Chen—synonym of V. rockiana (sect. Chamaemelanium)
Viola biflora var. valdepilosa Hand.-Mazz.—synonym of V. biflora (sect. Chamaemelanium)
Viola binayensis Okamoto & K. Ueda—(sect. Plagiostigma, subsect. Stolonosae)
Viola binchuanensis S. H. Huang—synonym of V. grandisepala (sect. Plagiostigma, subsect. Stolonosae)
Viola bissellii House—hybrid (V. communis × V. cucullata; sect. Nosphinium, subsect. Borealiamericanae)
Viola bissetii Maxim.—(sect. Plagiostigma, subsect. Stolonosae)
Viola blanda subsp. macloskeyi (F. E. Lloyd) A. E. Murray—synonym of V. macloskeyi (sect. Plagiostigma, subsect. Stolonosae)
Viola blanda var. macloskeyi (F. E. Lloyd) Jeps.—synonym of V. macloskeyi (sect. Plagiostigma, subsect. Stolonosae)
Viola blanda var. renifolia (A. Gray) A. Gray—synonym of V. renifolia (sect. Plagiostigma, subsect. Stolonosae)
Viola blanda Willd.—(sect. Plagiostigma, subsect. Stolonosae)
Viola blandiformis Nakai—synonym of V. brachyceras (sect. Plagiostigma, subsect. Stolonosae)
Viola blaxlandiae J. M. Watson & A. R. Flores—hybrid (V. cotyledon × V. pachysoma; sect. Sempervivum)
Viola bocquetiana Yıld.—(sect. Viola, subsect. Viola)
Viola boissieuana Makino—(sect. Plagiostigma, subsect. Patellares)
Viola boissieui H. Lév. & Maire—synonym of V. delavayi (sect. Chamaemelanium)
Viola bolivari Pau—synonym of V. pachyrrhiza (sect. Spathulidium)
Viola boliviana Britton—(sect. Leptidium)
Viola boliviana W. Becker, non Britton—synonym of V. steinbachii (sect. Leptidium)
Viola bonnevillensis Cottam—hybrid (V. beckwithii × V. utahensis; sect. Chamaemelanium)
Viola borchersii Phil.—synonym of V. frigida (sect. Rosulatae)
Viola borealis Weinm.—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola bornmuelleri Erben—(sect. Melanium, subsect. Bracteolatae)
Viola borussica (Borbás) W. Becker—hybrid (V. canina × V. reichenbachiana; sect. Viola, subsect. Rostratae)
Viola brachyantha Stapf—synonym of V. kitaibeliana (sect. Melanium, subsect. Bracteolatae)
Viola brachycentra Hayata—probable synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola brachyceras Turcz.—(sect. Plagiostigma, subsect. Stolonosae)
Viola brachypetala Gay—synonym of V. huidobrii (sect. Viola, subsect. Rostratae)
Viola brachyphylla W. Becker—(sect. Melanium, subsect. Bracteolatae)
Viola brachysepala Maxim.—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola brainerdii Greene—synonym of V. renifolia (sect. Plagiostigma, subsect. Stolonosae)
Viola brauniae Grover ex Cooperr.—hybrid (V. rostrata × V. striata; sect. Viola, subsect. Rostratae)
Viola braunii Borbás—hybrid (V. canina × V. rupestris; sect. Viola, subsect. Rostratae)
Viola breviflora Jungsim Lee & M. Kim—(sect. Plagiostigma, subsect. Patellares)
Viola brevipes (M. S. Baker) Marcussen, ined.—(sect. Plagiostigma, subsect. Stolonosae)
Viola brevistipulata (Franch. & Sav.) W. Becker—(sect. Chamaemelanium)
Viola bridgesii Britton—(sect. Leptidium)
Viola brittoniana Pollard—(sect. Nosphinium, subsect. Borealiamericanae)
Viola brittoniana var. pectinata (E. P. Bicknell) Alexander—synonym of V. pectinata (sect. Nosphinium, subsect. Borealiamericanae)
Viola brunneostipulosa Hand.-Mazz.—synonym of V. grandisepala (sect. Plagiostigma, subsect. Stolonosae)
Viola bubanii Timb.-Lagr.—(sect. Melanium, subsect. Bracteolatae)
Viola buchtieniana W. Becker—synonym of V. maculata var. microphyllos (sect. Chilenium)
Viola bulbosa Maxim.—(sect. Plagiostigma, subsect. Bulbosae)
Viola bulbosa subsp. tuberifera (Franch.) W. Becker—synonym of V. tuberifera (sect. Plagiostigma, subsect. Bulbosae)
Viola bulbosa var. franchetii H. Boissieu—synonym of V. tuberifera (sect. Plagiostigma, subsect. Bulbosae)
Viola burgersdijkii Oud.—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola burnatii Gremli—hybrid (V. riviniana × V. rupestris; sect. Viola, subsect. Rostratae)
Viola bustillosia Gay—(sect. Grandiflos)
Viola cadevallii Pau—synonym of V. alba subsp. dehnhardtii (sect. Viola, subsect. Viola)
Viola caesariensis House—hybrid (V. palmata var. triloba × V. sagittata; sect. Nosphinium, subsect. Borealiamericanae)
Viola caespitosa D. Don—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola calabra (A. Terracc.) Ricceri & Moraldo—synonym of V. aethnensis subsp. messanensis (sect. Melanium, subsect. Bracteolatae)
Viola calaminaria (DC.) Lej.—synonym of V. lutea (sect. Melanium, subsect. Bracteolatae)
Viola calcarata L.—(sect. Melanium, subsect. Bracteolatae)
Viola calcarata L. subsp. calcarata—(sect. Melanium, subsect. Bracteolatae)
Viola calcarata subsp. cavillieri (W. Becker) Negodi—(sect. Melanium, subsect. Bracteolatae)
Viola calcarata subsp. villarsiana (Roem. & Schult.) Merxm.—(sect. Melanium, subsect. Bracteolatae)
Viola calcarata subsp. zoysii (Wulfen) Merxm.—(sect. Melanium, subsect. Bracteolatae)
Viola calchaquiensis W. Becker—(sect. Rosulatae)
Viola calcicola R. A. McCauley & H. E. Ballard—(sect. Nosphinium, subsect. Borealiamericanae)
Viola calderensis W. Becker—synonym of V. polypoda (sect. Subandinium)
Viola caleyana G. Don—(sect. Plagiostigma, subsect. Bilobatae)
Viola californica M. S. Baker—(sect. Chamaemelanium)
Viola callosa Benth.—synonym of V. stipularis (sect. Leptidium)
Viola cameleo H. Boissieu—(sect. Chamaemelanium)
Viola canadensis L.—(sect. Chamaemelanium)
Viola canadensis subsp. scopulorum (A. Gray) House—synonym of V. scopulorum (sect. Chamaemelanium)
Viola canadensis var. rugulosa (Greene) C. L. Hitchc.—synonym of V. rugulosa (sect. Chamaemelanium)
Viola canadensis var. rydbergii (Greene) House—synonym of V. canadensis (sect. Chamaemelanium)
Viola canadensis var. scopulorum A. Gray—synonym of V. scopulorum (sect. Chamaemelanium)
Viola canadensis var. sitchensis Bong. ex Ledeb.—synonym of V. glabella (sect. Chamaemelanium)
Viola candidula Nieuwl.—synonym of V. missouriensis (sect. Nosphinium, subsect. Borealiamericanae)
Viola canescens f. glabrescens W. Becker—probable synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola canescens H. Boissieu & Capit., non Wall.—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola canescens subsp. lanuginosa W. Becker—probable synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola canescens Wall.—(sect. Viola, subsect. Viola)
Viola canina L.—(sect. Viola, subsect. Rostratae)
Viola canina L. subsp. canina—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola canina subsp. montana auct.—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola canina subsp. ruppii (All.) Schübl. & G. Martens—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola canina subsp. schultzii (Billot) Kirschl.—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola canina var. adunca (Sm.) A. Gray—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola canina var. kamtschatica Ging.—synonym of V. sacchalinensis (sect. Viola, subsect. Rostratae)
Viola canina var. muhlenbergii (Torr.) A. Gray—synonym of V. labradorica (sect. Rostratae)
Viola canobarbata Leyb.—synonym of V. montagnei (sect. Rosulatae)
Viola canobarbata var. albiflora W. Becker—synonym of V. montagnei (sect. Rosulatae)
Viola capillaris Pers.—(sect. Rubellium)
Viola carlesii Nakai—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola carnosula W. Becker—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola cascadensis M. S. Baker—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola caspia (Rupr.) Freyn—(sect. Viola, subsect. Rostratae)
Viola cassinensis Strobl—synonym of V. pseudogracilis subsp. cassinensis (sect. Melanium, subsect. Bracteolatae)
Viola castillonii (W. Becker) Xifreda & Sanso—synonym of V. flavicans (sect. Xanthidium)
Viola catalonica W. Becker—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola caucasica (Rupr.) Kolen. ex Juz.—(sect. Chamaemelanium)
Viola caviahuensis M. Sheader & A.-L. Sheader—synonym of V. pachysoma (sect. Sempervivum)
Viola cavillieri W. Becker—synonym of V. calcarata subsp. cavillieri (sect. Melanium, subsect. Bracteolatae)
Viola cazorlensis Gand.—(sect. Delphiniopsis)
Viola celebica W. Becker—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola cenisia L.—(sect. Melanium, subsect. Bracteolatae)
Viola cephalonica Bornm.—(sect. Melanium, subsect. Bracteolatae)
Viola cerasifolia A. St.-Hil.—(sect. Leptidium)
Viola cerasifolia subsp. conferta (A. St.-Hil.) W. Becker—synonym of V. cerasifolia (sect. Leptidium)
Viola cerasifolia subsp. selloiana W. Becker—synonym of V. cerasifolia (sect. Leptidium)
Viola cerasifolia subsp. typica W. Becker—synonym of V. cerasifolia (sect. Leptidium)
Viola cerasifolia var. intermedia A. St.-Hil.—synonym of V. cerasifolia (sect. Leptidium)
Viola cervatiana Ricceri & Moraldo—synonym of V. aethnensis subsp. splendida (sect. Melanium, subsect. Bracteolatae)
Viola cestrica House—hybrid (V. emarginata × V. sagittata; sect. Nosphinium, subsect. Borealiamericanae)
Viola chaerophylloides (Regel) W. Becker—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola chalcosperma Brainerd—(sect. Nosphinium, subsect. Borealiamericanae)
Viola chamaedrys Leyb.—(sect. Rosulatae)
Viola chamissoniana Ging.—(sect. Nosphinium, subsect. Nosphinium)
Viola chamissoniana subsp. robusta (Hillebr.) W. L. Wagner, D. R. Herbst & Sohmer—synonym of V. robusta (sect. Nosphinium, subsect. Nosphinium)
Viola chamissoniana subsp. tracheliifolia (Ging.) W. L. Wagner, D. R. Herbst & Sohmer—synonym of V. tracheliifolia (sect. Nosphinium, subsect. Nosphinium)
Viola champlainensis House—hybrid (V. affinis × V. septentrionalis; sect. Nosphinium, subsect. Borealiamericanae)
Viola changii J. S. Zhou & F. W. Xing—(sect. Plagiostigma, subsect. Diffusae)
Viola charlestonensis M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola chassanica Kork.—synonym of V. yazawana (sect. Plagiostigma, subsect. Stolonosae)
Viola cheeseana J. M. Watson—(sect. Grandiflos)
Viola cheiranthifolia Bonpl.—(sect. Melanium, subsect. Bracteolatae)
Viola chejuensis Y. N. Lee & Y. C. Oh—hybrid (V. albida (V. chaerophylloides) × V. phalacrocarpa; sect. Plagiostigma, subsect. Patellares)
Viola chelmea Boiss.—(sect. Viola, subsect. Viola)
Viola chelmea Boiss. & Heldr. subsp. chelmea—synonym of V. chelmea (sect. Viola, subsect. Viola)
Viola chelmea subsp. vratnikensis Gáyer & Degen—synonym of V. vilaensis (sect. Viola, subsect. Viola)
Viola chiapasiensis W. Becker—synonym of V. nannei (sect. Nosphinium, subsect. Mexicanae)
Viola chillanensis Phil.—synonym of V. congesta (sect. Rosulatae)
Viola chinensis f. alboviolacea Skvortsov—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola chinensis f. anomala Skvortsov—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola chinensis f. communis Skvortsov—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola chinensis f. dissecta Skvortsov—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola chinensis f. glabra Skvortsov—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola chinensis G. Don—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola chingiana W. Becker—synonym of V. biflora (sect. Chamaemelanium)
Viola chrysantha Phil.—synonym of V. philippiana (sect. Rosulatae)
Viola chrysantha Schrad. ex Rchb.—hybrid (V. calcarata × V. lutea; sect. Melanium, subsect. Bracteolatae)
Viola cilentana Ricceri & Moraldo—synonym of V. aethnensis subsp. splendida (sect. Melanium, subsect. Bracteolatae)
Viola ciliaris Willd. ex W. Becker—synonym of V. stipularis (sect. Leptidium)
Viola ciliata Schltdl., non Willd. ex Schult.—synonym of V. grahamii (sect. Nosphinium, subsect. Mexicanae)
Viola cilicica Contandr. & Quézel—synonym of V. jordanii (sect. Viola, subsect. Rostratae)
Viola cinerea Boiss.—(sect. Sclerosium)
Viola cinerea var. erythraea Fiori—synonym of V. erythraea (sect. Sclerosium)
Viola cinerea var. stocksii (Boiss.) W. Becker—synonym of V. stocksii (sect. Sclerosium)
Viola clauseniana M. S. Baker—(sect. Nosphinium, subsect. Clausenianae)
Viola cleistogamoides (L. G. Adams) Seppelt—(sect. Erpetion)
Viola cochranei H. E. Ballard—(sect. Plagiostigma, subsect. Stolonosae)
Viola cognata Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola collina Besser—(sect. Viola, subsect. Viola)
Viola colombiana W. Becker—synonym of V. scandens var. scandens (sect. Leptidium)
Viola colubrina Wedd. ex W. Becker—synonym of V. fuscifolia (sect. Leptidium)
Viola columbiana House—hybrid (V. affinis × V. communis; sect. Nosphinium, subsect. Borealiamericanae)
Viola columnaris Skottsb.—(sect. Sempervivum)
Viola comberi W. Becker—(sect. Sempervivum)
Viola commersonii DC. ex Ging.—(sect. Chilenium)
Viola communis Pollard—(sect. Nosphinium, subsect. Borealiamericanae)
Viola comollia Massara—(sect. Melanium, subsect. Bracteolatae)
Viola concordifolia C. J. Wang—synonym of V. yunnanfuensis (sect. Plagiostigma, subsect. Patellares)
Viola concordifolia var. hirtipedicellata Ching J. Wang—synonym of V. japonica (sect. Plagiostigma, subsect. Patellares)
Viola conferta (W. Becker) Nakai—synonym of V. orientalis (sect. Chamaemelanium)
Viola conferta A. St.-Hil.—synonym of V. cerasifolia (sect. Leptidium)
Viola confertifolia C. C. Chang—(sect. Chamaemelanium)
Viola confusa Champ. ex Benth.—synonym of V. philippica subsp. malesica (sect. Plagiostigma, subsect. Patellares)
Viola confusa H. Boissieu & Capit., non Champ.—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola congener Leconte—synonym of V. palmata var. triloba (sect. Nosphinium, subsect. Borealiamericanae)
Viola congesta Gillies ex Hook. & Arn.—(sect. Rosulatae)
Viola conilii Franch. & Sav.—synonym of V. phalacrocarpa (sect. Plagiostigma, subsect. Patellares)
Viola conjugens Greene—hybrid (V. communis × V. sagittata; sect. Nosphinium, subsect. Borealiamericanae)
Viola consobrina House—hybrid (V. affinis × V. hirsutula; sect. Nosphinium, subsect. Borealiamericanae)
Viola consocia House—hybrid (V. affinis × V. cucullata; sect. Nosphinium, subsect. Borealiamericanae)
Viola consona House—hybrid (V. affinis × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola conspersa Rchb.—synonym of V. labradorica (sect. Rostratae)
Viola conspersa var. masonii Farwell—synonym of V. striata (sect. Viola, subsect. Rostratae)
Viola contempta Jord.—hybrid (V. arvensis × V. tricolor; sect. Melanium, subsect. Bracteolatae)
Viola conturbata House—hybrid (V. cucullata × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola convicta House—hybrid (V. fimbriatula × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola cooperrideri H. E. Ballard—hybrid (V. striata × V. walteri; sect. Viola, subsect. Rostratae)
Viola copahuensis M. Sheader & A.-L. Sheader—synonym of V. pachysoma (sect. Sempervivum)
Viola corchorifolia Dombey ex Ging.—synonym of V. arguta (sect. Leptidium)
Viola cordifolia (Nutt.) Schwein.—hybrid (V. hirsutula × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola cordifolia W. Becker, non Schwein.—synonym of V. yunnanfuensis (sect. Plagiostigma, subsect. Patellares)
Viola coreana H. Boissieu—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola cornuta L.—(sect. Melanium, subsect. Bracteolatae)
Viola coronifera var. minoriflora W. Becker—synonym of V. coronifera (sect. Sempervivum)
Viola coronifera W. Becker—(sect. Sempervivum)
Viola corralensis Phil.—synonym of V. rubella (sect. Rubellium)
Viola corsica Nyman—(sect. Melanium, subsect. Bracteolatae)
Viola corsica Nyman subsp. corsica—(sect. Melanium, subsect. Bracteolatae)
Viola corsica subsp. ilvensis (W. Becker) Merxm.—(sect. Melanium, subsect. Bracteolatae)
Viola corsica subsp. limbarae Merxm. & Lippert—(sect. Melanium, subsect. Bracteolatae)
Viola cotyledon Ging.—(sect. Sempervivum)
Viola cotyledon subsp. lologensis W. Becker—synonym of V. lologensis (sect. Sempervivum)
Viola crassa (Makino) Makino—(sect. Chamaemelanium)
Viola crassa (Makino) Makino subsp. crassa—(sect. Chamaemelanium)
Viola crassa subsp. alpicola Takah.—(sect. Chamaemelanium)
Viola crassa subsp. avatschensis (W. Becker & Hultén) Espeut—(sect. Chamaemelanium)
Viola crassa subsp. borealis Takah.—(sect. Chamaemelanium)
Viola crassa subsp. yatsugatakeana Takah.—(sect. Chamaemelanium)
Viola crassa var. shikkensis Miyabe & Tatew.—synonym of V. crassa subsp. avatschensis (sect. Chamaemelanium)
Viola crassa var. vegeta Nakai—synonym of V. biflora (sect. Chamaemelanium)
Viola crassicalcarata Ching J. Wang—synonym of V. japonica (sect. Plagiostigma, subsect. Patellares)
Viola crassicornis W. Becker & Hultén—synonym of V. tokubuchiana (sect. Plagiostigma, subsect. Patellares)
Viola crassifolia Fenzl—(sect. Melanium, subsect. Bracteolatae)
Viola crassiuscula Bory—(sect. Melanium, subsect. Bracteolatae)
Viola crassula Greene—hybrid (V. nephrophylla × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola crenulata Greene—hybrid (V. affinis × V. nephrophylla), synonym of V. venustula (sect. Nosphinium, subsect. Borealiamericanae)
Viola cretica Boiss. & Heldr.—synonym of V. alba subsp. cretica (sect. Viola, subsect. Viola)
Viola crinita Wedd. ex W. Becker—synonym of V. steinbachii (sect. Leptidium)
Viola cryana Gillot—(sect. Melanium, subsect. Bracteolatae)
Viola cuatrecasasii L. B. Sm. & A. Fernández—synonym of V. scandens var. integristipula (sect. Leptidium)
Viola cucullata Aiton—(sect. Nosphinium, subsect. Borealiamericanae)
Viola cucullata var. leptosepala (Greene) W. Stone—synonym of V. cucullata (sect. Nosphinium, subsect. Borealiamericanae)
Viola cucullata var. macrotis (Greene) W. Stone—synonym of V. cucullata (sect. Nosphinium, subsect. Borealiamericanae)
Viola cucullata var. microtitis Brainerd—synonym of V. cucullata (sect. Nosphinium, subsect. Borealiamericanae)
Viola cuicochensis Hieron.—(sect. Nosphinium, subsect. Mexicanae)
Viola culminis F. Fen. & Moraldo—(sect. Melanium, subsect. Bracteolatae)
Viola cummingii W. Becker—synonym of V. bridgesii (sect. Leptidium)
Viola cuneata S. Watson—(sect. Chamaemelanium)
Viola cunninghamii Hook. f.—(sect. Plagiostigma, subsect. Bilobatae)
Viola curicoensis W. Becker—synonym of V. aurantiaca (sect. Rosulatae)
Viola curtisiae (L. G. Adams) K. R. Thiele—(sect. Erpetion)
Viola curvistylis H. Boissieu & Capit.—synonym of V. yunnanensis (sect. Plagiostigma, subsect. Stolonosae)
Viola cuspidifolia W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola cyathiformis W. Becker—synonym of V. aizoon (sect. Sempervivum)
Viola czemalensis Zuev—synonym of V. macroceras (sect. Plagiostigma, subsect. Patellares)
Viola dacica Borbás—(sect. Melanium, subsect. Bracteolatae)
Viola dactyloides Schult.—(sect. Plagiostigma, subsect. Patellares)
Viola dactyloides var. multipartita W. Becker—synonym of V. dactyloides (sect. Plagiostigma, subsect. Patellares)
Viola dageletiana Nakai—synonym of V. kusanoana (sect. Viola, subsect. Rostratae)
Viola dalatensis Gagnep.—synonym of V. hossei (sect. Plagiostigma, subsect. Stolonosae)
Viola dandoisiorum J. M. Watson & A. R. Flores—(sect. Relictium)
Viola danielae Pînzaru—replacement name for V. mariae Pinzaru, status uncertain; probably a synonym of V. dubiana or a hybrid (sect. Melanium, subsect. Bracteolatae)
Viola dasyphylla W. Becker—(sect. Sempervivum)
Viola davidii Franch.—(sect. Plagiostigma, subsect. Stolonosae)
Viola davidii var. paucicrenata W. Becker—synonym of V. davidii (sect. Plagiostigma, subsect. Stolonosae)
Viola davisii House—hybrid (V. affinis × V. brittoniana; sect. Nosphinium, subsect. Borealiamericanae)
Viola decipiens Reiche—(sect. Rosulatae)
Viola declinata Waldst. & Kit.—(sect. Melanium, subsect. Bracteolatae)
Viola decumbens L. f.—(sect. Melvio)
Viola dehnhardtii Ten.—synonym of V. alba subsp. dehnhardtii (sect. Viola, subsect. Viola)
Viola delavayi f. depauperata Diels—synonym of V. delavayi (sect. Chamaemelanium)
Viola delavayi Franch.—(sect. Chamaemelanium)
Viola delavayi var. villosa W. Becker—synonym of V. delavayi (sect. Chamaemelanium)
Viola delphinantha Boiss.—(sect. Delphiniopsis)
Viola delphiniifolia Nutt. ex Torr. & A. Gray—synonym of V. pedatifida (sect. Nosphinium, subsect. Borealiamericanae)
Viola deltoidea Yatabe—synonym of V. raddeana (sect. Plagiostigma, subsect. Bilobatae)
Viola demetria Prolongo ex Boiss.—(sect. Melanium, subsect. Dispares)
Viola denizliensis O. D. Düsen, Göktürk, U. Sarpkaya & B. Gürcan—(sect. Melanium, subsect. Ebracteatae)
Viola dentariifolia H. Boissieu—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola deseglisei Jord. ex Boreau—synonym of V. arvensis (sect. Melanium, subsect. Bracteolatae)
Viola diamantiaca Nakai—(sect. Plagiostigma, subsect. Stolonosae)
Viola diamantiaca var. glabrior Kitag.—synonym of V. diamantiaca (sect. Plagiostigma, subsect. Stolonosae)
Viola dichotoma Ging.—synonym of V. scandens var. scandens (sect. Leptidium)
Viola dichroa Boiss.—(sect. Melanium, subsect. Bracteolatae)
Viola dicksonii Greene—synonym of V. sororia (sect. Nosphinium, subsect. Borealiamericanae)
Viola diffusa Ging.—(sect. Plagiostigma, subsect. Diffusae)
Viola diffusa subsp. apoensis (Elmer) D. M. Moore—synonym of V. apoensis (sect. Plagiostigma, subsect. Diffusae)
Viola diffusa subsp. tenuis (Benth.) W. Becker—synonym of V. tenuis (sect. Plagiostigma, subsect. Diffusae)
Viola diffusa var. brevibarbata C. J. Wang—synonym of V. diffusa (sect. Plagiostigma, subsect. Diffusae)
Viola diffusa var. brevisepala W. Becker—synonym of V. diffusa (sect. Plagiostigma, subsect. Diffusae)
Viola diffusa var. glabella H. Boissieu—synonym of V. diffusa (sect. Plagiostigma, subsect. Diffusae)
Viola diffusa var. glaberrima W. Becker—synonym of V. diffusa (sect. Plagiostigma, subsect. Diffusae)
Viola diffusa var. tomentosa W. Becker—synonym of V. diffusa (sect. Plagiostigma, subsect. Diffusae)
Viola diffusoides C. J. Wang—synonym of V. diffusa (sect. Plagiostigma, subsect. Diffusae)
Viola digitata Pursh—synonym of V. pedata subsp. pedata (sect. Nosphinium, subsect. Pedatae)
Viola dimissa House—hybrid (V. emarginata × V. hirsutula; sect. Nosphinium, subsect. Borealiamericanae)
Viola dimorphophylla Y. S. Chen & Q. E. Yang—(sect. Chamaemelanium)
Viola dirimliensis Blaxland—(sect. Melanium, subsect. Ebracteatae)
Viola dirphya Tiniakou—(sect. Viola, subsect. Rostratae)
Viola discors House—hybrid (V. affinis × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola discurrens Greene—synonym of V. canadensis (sect. Chamaemelanium)
Viola disjuncta W. Becker—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola dissecta f. pubescens (Regel) Kitag.—synonym of V. dissecta (sect. Plagiostigma, subsect. Patellares)
Viola dissecta f. sieboldiana (Maxim.) Makino—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola dissecta Ledeb.—synonym of V. multifida (sect. Plagiostigma, subsect. Patellares)
Viola dissecta subvar. albida (Palib.) Makino—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola dissecta var. albida (Palib.) Nakai—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola dissecta var. chaerophylloides (Regel) Makino—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola dissecta var. pubescens (Regel) Kitag.—synonym of V. dissecta (sect. Plagiostigma, subsect. Patellares)
Viola dissecta var. sieboldiana (Maxim.) Nakai—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola dissecta var. takahashii Nakai—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola dissena House—hybrid (V. affinis × V. sagittata; sect. Nosphinium, subsect. Borealiamericanae)
Viola dissita House—hybrid (V. hirsutula × V. palmata var. triloba; sect. Nosphinium, subsect. Borealiamericanae)
Viola distans Wall.—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola diversifolia (Ging.) W. Becker—(sect. Melanium, subsect. Bracteolatae)
Viola doerfleri Degen—(sect. Melanium, subsect. Bracteolatae)
Viola doii Taken.—hybrid (V. mandshurica × V. violacea; sect. Plagiostigma, subsect. Patellares)
Viola dolichoceras C. J. Wang—synonym of V. pekinensis (sect. Plagiostigma, subsect. Patellares)
Viola dombeyana DC. ex Ging.—(sect. Leptidium)
Viola domeikoana Gay—(sect. Subandinium)
Viola donetzkiensis Klokov—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola douglasii Steud.—(sect. Chamaemelanium)
Viola dowelliana House—hybrid (V. affinis × V. hirsutula), synonym of V. consobrina (sect. Nosphinium, subsect. Borealiamericanae)
Viola dubia Wiesb.—hybrid (V. reichenbachiana × V. riviniana; sect. Viola, subsect. Rostratae)
Viola dubyana Burnat ex Gremli—(sect. Melanium, subsect. Bracteolatae)
Viola duclouxii W. Becker—(sect. Plagiostigma, subsect. Australasiaticae)
Viola dukadjinica W. Becker & Košanin—(sect. Melanium, subsect. Bracteolatae)
Viola dumetorum Phil.—synonym of V. capillaris (sect. Rubellium)
Viola dusenii W. Becker & Sam.—synonym of V. uleana (sect. Leptidium)
Viola dyris Maire—(sect. Melanium, subsect. Dispares)
Viola eamesii House—hybrid (V. brittoniana × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola ebracteolata Fenzl—synonym of V. modesta (sect. Melanium, subsect. Ebracteatae)
Viola eclipes H. E. Ballard—hybrid (V. labradorica × V. striata; sect. Viola, subsect. Rostratae)
Viola ecuadorensis W. Becker—synonym of V. humilis (sect. Nosphinium, subsect. Mexicanae)
Viola edanoii W. Becker—synonym of V. philippica (sect. Plagiostigma, subsect. Patellares)
Viola edulis Spach—(sect. Nosphinium, subsect. Borealiamericanae)
Viola effusa W. Becker—synonym of V. rupicola (sect. Plagiostigma, subsect. Patellares)
Viola egglestoniana House—hybrid (V. fimbriatula × V. latiuscula; sect. Nosphinium, subsect. Borealiamericanae)
Viola egglestonii Brainerd—(sect. Nosphinium, subsect. Borealiamericanae)
Viola egregia House—hybrid (V. brittoniana × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola eizanensis (Makino) Makino—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola eizasieboldii Sugim. ex T. Shimizu—hybrid (V. albida (V. eizanensis) × V. sieboldii; sect. Plagiostigma, subsect. Patellares)
Viola elatior Fr.—(sect. Viola, subsect. Rostratae)
Viola elegantula Schott—(sect. Melanium, subsect. Bracteolatae)
Viola elisabethae Klokov—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola emarginata (Nutt.) Leconte—(sect. Nosphinium, subsect. Borealiamericanae)
Viola emarginata var. subsinuata Greene—synonym of V. subsinuata (sect. Nosphinium, subsect. Borealiamericanae)
Viola emeiensis C. J. Wang—synonym of V. bambusetorum (sect. Plagiostigma, subsect. Patellares)
Viola eminens K. R. Thiele & Prober—(sect. Erpetion)
Viola eminii (Engl.) R. E. Fr.—(sect. Abyssinium)
Viola eminii var. duriprati (R. E. Fr.) Stork—synonym of V. eminii (sect. Abyssinium)
Viola emirnensis Bojer—synonym of V. abyssinica (sect. Abyssinium)
Viola enmae P. Gonzáles—(sect. Inconspicuiflos)
Viola epipsila Ledeb.—(sect. Plagiostigma, subsect. Stolonosae)
Viola epipsila var. hyperborea Rupr.—synonym of V. suecica subsp. suecica (sect. Plagiostigma, subsect. Stolonosae)
Viola epipsila subsp. repens W. Becker—synonym of V. suecica subsp. repens (sect. Plagiostigma, subsect. Stolonosae)
Viola epipsila var. repens (W. Becker) R. J. Little—synonym of V. suecica subsp. repens (sect. Plagiostigma, subsect. Stolonosae)
Viola epipsiloides Á. Löve & D. Löve—synonym of V. suecica subsp. repens (sect. Plagiostigma, subsect. Stolonosae)
Viola epirota (Halácsy) Raus—(sect. Melanium, subsect. Bracteolatae)
Viola erdneri Gerstl.—hybrid (V. odorata × V. suavis; sect. Viola, subsect. Viola)
Viola erectifolia A. Nelson—synonym of V. praemorsa subsp. linguifolia (sect. Chamaemelanium)
Viola eriksoniana W. Becker—hybrid (V. riviniana × V. uliginosa; sect. Viola, subsect. Rostratae)
Viola eriocarpa Schwein.—(sect. Chamaemelanium)
Viola ermenekensis Yıld. & Dinç—(sect. Melanium, subsect. Ebracteatae)
Viola erratica House—hybrid (V. emarginata × V. fimbriatula; sect. Nosphinium, subsect. Borealiamericanae)
Viola erythraea (Fiori) Chiov.—(sect. Sclerosium)
Viola escarapela J. M. Watson & A. R. Flores—(sect. Rosulatae)
Viola escondidaensis W. Becker—(sect. Rhizomandinium)
Viola esculenta Elliott ex Greene—synonym of V. edulis (sect. Nosphinium, subsect. Borealiamericanae)
Viola etbaica Schweinf.—(sect. Sclerosium)
Viola etrusca Erben—(sect. Melanium, subsect. Bracteolatae)
Viola euboea Halácsy—(sect. Melanium, subsect. Bracteolatae)
Viola eugeniae Parl.—(sect. Melanium, subsect. Bracteolatae)
Viola eugeniae Parl. subsp. eugeniae—(sect. Melanium, subsect. Bracteolatae)
Viola eugeniae subsp. levieri (Parl.) A. Schmidt—(sect. Melanium, subsect. Bracteolatae)
Viola evae Hieron. ex W. Becker—(sect. Rosulatae)
Viola evae var. flossdorfii (Hicken) Nicola—synonym of V. evae (sect. Rosulatae)
Viola excerpta House—hybrid (V. baxteri × V. fimbriatula; sect. Nosphinium, subsect. Borealiamericanae)
Viola excisa Hance—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola exigua var. castillonii W. Becker—synonym of V. flavicans (sect. Xanthidium)
Viola exigua W. Becker—synonym of V. flavicans (sect. Xanthidium)
Viola exilis Phil.—(sect. Rosulatae)
Viola eximia Formánek—(sect. Melanium, subsect. Bracteolatae)
Viola eximia Formánek subsp. eximia—(sect. Melanium, subsect. Bracteolatae)
Viola eximia subsp. tringiana Erben—(sect. Melanium, subsect. Bracteolatae)
Viola exsul J. M. Watson & A. R. Flores—(sect. Rosulatae)
Viola extremiorientalis Vorosch. & N. S. Pavlova—synonym of V. tokubuchiana (sect. Plagiostigma, subsect. Patellares)
Viola falcata Greene—synonym of V. palmata var. dilatata (sect. Nosphinium, subsect. Borealiamericanae)
Viola falconeri Hook. f. & Thomson—synonym of V. jordanii (sect. Viola, subsect. Rostratae)
Viola fallacissima Greene—hybrid (V. pedatifida × V. sororia), synonym of V. bernardii (sect. Nosphinium, subsect. Borealiamericanae)
Viola fargesii H. Boissieu—(sect. Plagiostigma, subsect. Stolonosae)
Viola farkasiana J. M. Watson & A. R. Flores—(sect. Rosulatae)
Viola faurieana W. Becker—(sect. Viola, subsect. Rostratae)
Viola fedtschenkoana W. Becker—synonym of V. caspia (sect. Viola, subsect. Rostratae)
Viola fennica F. Nyl.—synonym of V. epipsila (sect. Plagiostigma, subsect. Stolonosae)
Viola ferdinandea Ricceri & Moraldo—synonym of V. aethnensis subsp. messanensis (sect. Melanium, subsect. Bracteolatae)
Viola fernaldii House—hybrid (V. fimbriatula × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola ferrarinii Moraldo & Ricceri—(sect. Melanium, subsect. Bracteolatae)
Viola ferreyrae P. Gonzáles—(sect. Rosulatae)
Viola festata House—hybrid (V. cucullata × V. sagittata; sect. Nosphinium, subsect. Borealiamericanae)
Viola fibrillosa W. Becker—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola filicaulis Hook. f.—(sect. Nematocaulon)
Viola filicetorum Greene—hybrid (V. affinis × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola filifera Kom.—synonym of V. bulbosa (sect. Plagiostigma, subsect. Bulbosae)
Viola fimbriata Steud.—synonym of V. maculata var. microphyllos (sect. Chilenium)
Viola fimbriatula Sm.—(sect. Nosphinium, subsect. Borealiamericanae)
Viola fischeri Sweet, non W. Becker—synonym of V. gmeliniana (sect. Plagiostigma, subsect. Patellares)
Viola fischeri W. Becker—(sect. Chamaemelanium)
Viola fissifolia Kitag.—hybrid (V. ingolensis × [unknown]; sect. Plagiostigma, subsect. Patellares)
Viola flagelliformis Hemsl.—(sect. Chamaemelanium)
Viola flagelliformis var. glabrescens W. Becker—synonym of V. flagelliformis (sect. Chamaemelanium)
Viola flavicans Wedd.—(sect. Xanthidium)
Viola flavida Bureau & Franch., non Schur—synonym of V. tienschiensis (sect. Plagiostigma, subsect. Patellares)
Viola flaviflora Nakai—synonym of V. brevistipulata (sect. Chamaemelanium)
Viola flavovirens Pollard—synonym of V. praemorsa subsp. flavovirens (sect. Chamaemelanium)
Viola flettii Piper—(sect. Chamaemelanium)
Viola floridana Brainerd—(sect. Nosphinium, subsect. Borealiamericanae)
Viola flos-idae Hieron.—(sect. Triflabellium)
Viola flos-idae var. pseudovolcanica Hieron.—synonym of V. flos-idae (sect. Triflabellium)
Viola flos-mariae Hieron.—synonym of V. montagnei (sect. Rosulatae)
Viola flos-mariae var. nivea Hieron.—synonym of V. montagnei (sect. Rosulatae)
Viola flos-mariae var. virescens Hieron.—synonym of V. montagnei (sect. Rosulatae)
Viola fluehmannii Phil.—(sect. Ericoidium)
Viola foliosa Čelak.—hybrid (V. hirta × V. suavis; sect. Viola, subsect. Viola)
Viola formosana Hayata—(sect. Plagiostigma, subsect. Formosanae)
Viola formosana var. stenopetala (Hayata) J. C. Wang, T. C. Huang & T. Hashim.—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola formosana var. tozanensis (Hayata) C. F. Hsieh—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola forrestiana W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola forskaalii Greuter—synonym of V. stocksii (sect. Sclerosium)
Viola fragrans Sieber—(sect. Melanium, subsect. Bracteolatae)
Viola franchetii H. Boissieu—synonym of V. langsdorffii (sect. Nosphinium, subsect. Langsdorffianae)
Viola franksmithii N. H. Holmgren—(sect. Chamaemelanium)
Viola friderici W. Becker—(sect. Rosulatae)
Viola frigida Phil.—(sect. Rosulatae)
Viola frigida var. borchersii (Phil.) Reiche—synonym of V. frigida (sect. Rosulatae)
Viola frondosa (Velen.) Velen.—(sect. Melanium, subsect. Bracteolatae)
Viola frusinatae Ricceri & Moraldo—synonym of V. cassinensis subsp. cassinensis (sect. Melanium, subsect. Bracteolatae)
Viola fruticosa W. Becker—synonym of V. stipularis (sect. Leptidium)
Viola fujisanensis S. Watan.—hybrid (V. albida (V. eizanensis) × V. shikokiana; sect. Plagiostigma, subsect. Patellares)
Viola fukienensis W. Becker—synonym of V. kosanensis (sect. Viola, subsect. Rostratae)
Viola funghuangensis P. Y. Fu & Y. C. Teng—synonym of V. tokubuchiana (sect. Plagiostigma, subsect. Patellares)
Viola fuscifolia W. Becker—(sect. Leptidium)
Viola fuscoviolacea (L. G. Adams) T. A. James—(sect. Erpetion)
Viola fusiformis Sm.—synonym of V. gmeliniana (sect. Plagiostigma, subsect. Patellares)
Viola galacifolia Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola galeanaensis M. S. Baker—(sect. Chamaemelanium)
Viola ganchouenensis—synonym of V. tienschiensis (sect. Plagiostigma, subsect. Patellares)
Viola ganeschinii Vl. V. Nikitin—hybrid (V. mauritii × V. rupestris; sect. Viola, subsect. Rostratae)
Viola ganiatsasii Erben—(sect. Melanium, subsect. Bracteolatae)
Viola gaviolii Ricceri & Moraldo—synonym of V. aethnensis subsp. splendida (sect. Melanium, subsect. Bracteolatae)
Viola gelida J. M. Watson, M. P. Cárdenas & A. R. Flores—(sect. Rosulatae)
Viola geminiflora Greene—synonym of V. canadensis (sect. Chamaemelanium)
Viola genevensis W. Becker & Cheneverd—hybrid (V. canina (V. nemoralis) × V. stagnina (“V. persicifolia”); sect. Viola, subsect. Rostratae)
Viola germainii Sparre—(sect. Chilenium)
Viola glabella Nutt.—(sect. Chamaemelanium)
Viola glabella var. remotifolia Suksd.—synonym of V. glabella (sect. Chamaemelanium)
Viola glaberrima (Ging. ex Chapm.) House—(sect. Chamaemelanium)
Viola glaberrima (Murb.) Ye. V. Serg., non (Ging.) House—synonym of V. rupestris (sect. Viola, subsect. Rostratae)
Viola glacialis Poepp. & Endl.—synonym of V. truncata (sect. Grandiflos)
Viola glandularis H. E. Ballard & P. Jørg.—synonym of V. stuebelii (sect. Chilenium)
Viola glauca M. Bieb.—synonym of V. rupestris (sect. Viola, subsect. Rostratae)
Viola glaucescens Oudem.—(sect. Plagiostigma, subsect. Stolonosae)
Viola glechomoides Leyb.—(sect. Rosulatae)
Viola gmeliniana Schult.—(sect. Plagiostigma, subsect. Patellares)
Viola gmeliniana var. albiflora W. Becker—synonym of V. gmeliniana (sect. Plagiostigma, subsect. Patellares)
Viola gmeliniana var. glabra Ledeb.—synonym of V. gmeliniana (sect. Plagiostigma, subsect. Patellares)
Viola gmeliniana var. hispida Ledeb.—synonym of V. gmeliniana (sect. Plagiostigma, subsect. Patellares)
Viola godoyae Phil.—(sect. Relictium)
Viola gomphopetala Greene—synonym of V. praemorsa var. linguifolia (sect. Chamaemelanium)
Viola gostivariensis Bornm.—(sect. Melanium, subsect. Bracteolatae)
Viola gotlandica W. Becker—hybrid (V. pumila × V. stagnina; sect. Viola, subsect. Rostratae)
Viola gracilis Sm.—(sect. Melanium, subsect. Bracteolatae)
Viola gracillima A. St.-Hil.—(sect. Leptidium)
Viola gracillima var. incisa W. Becker—synonym of V. gracillima (sect. Leptidium)
Viola graeca (W. Becker) Halácsy—(sect. Melanium, subsect. Bracteolatae)
Viola grahamii Benth.—(sect. Nosphinium, subsect. Mexicanae)
Viola grandidentata Kalela—synonym of V. maculata var. maculata (sect. Chilenium)
Viola grandis Greene—hybrid (V. communis × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola grandisepala W. Becker—(sect. Plagiostigma, subsect. Stolonosae)
Viola granulosa Wedd.—(sect. Rosulatae)
Viola grayi Franch. & Sav.—(sect. Viola, subsect. Rostratae)
Viola grayi var. candida H. Boissieu—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola greatrexii Nakai & F. Maek.—hybrid (V. phalacrocarpa × V. variegata; sect. Plagiostigma, subsect. Patellares)
Viola greenei House—hybrid (V. communis × V. emarginata; sect. Nosphinium, subsect. Borealiamericanae)
Viola greenmanii House—hybrid (V. cucullata × V. palmata var. triloba; sect. Nosphinium, subsect. Borealiamericanae)
Viola griffithiana Boiss.—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola grisebachiana Vis.—(sect. Melanium, subsect. Bracteolatae)
Viola grubovii Vl. V. Nikitin—hybrid (V. variegata × V. dactyloides; sect. Plagiostigma, subsect. Patellares)
Viola grypoceras A. Gray—(sect. Viola, subsect. Rostratae)
Viola grypoceras var. barbata W. Becker—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola grypoceras var. pubescens Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola guadalupensis A. M. Powell & Wauer—(sect. Chamaemelanium)
Viola guangzhouensis A. Q. Dong, J. S. Zhou & F. W. Xing—(sect. Plagiostigma, subsect. Diffusae)
Viola guatemalensis W. Becker—(sect. Nosphinium, subsect. Mexicanae)
Viola guaxarensis M. Marrero, Docoito Díaz & Martín Esquivel—(sect. Melanium, subsect. Bracteolatae)
Viola guestphalica Nauenb.—synonym of V. lutea (sect. Melanium, subsect. Bracteolatae)
Viola halacsyana Degen & Dörfl.—hybrid (V. allchariensis × V. arsenica; sect. Melanium, subsect. Bracteolatae)
Viola hallii A. Gray—(sect. Chamaemelanium)
Viola hamiltoniana D. Don—(sect. Plagiostigma, subsect. Bilobatae)
Viola hancockii var. fangshanensis J. W. Wang—synonym of V. hancockii (sect. Plagiostigma, subsect. Patellares)
Viola hancockii W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola harae Miyabe & Tatew.—synonym of V. sacchalinensis (sect. Viola, subsect. Rostratae)
Viola hastata Michx.—(sect. Chamaemelanium)
Viola hastata var. tripartita (Elliott) A. Gray—synonym of V. tripartita (sect. Chamaemelanium)
Viola haynaldii Wiesb.—hybrid (V. ambigua × V. suavis; sect. Viola, subsect. Viola)
Viola hebeiensis J. W. Wang & T. G. Ma—synonym of V. mongolica (sect. Plagiostigma, subsect. Patellares)
Viola hederacea Labill.—(sect. Erpetion)
Viola hederacea subsp. cleistogamoides L. G. Adams—synonym of V. cleistogamoides (sect. Erpetion)
Viola hederacea subsp. curtisiae L. G. Adams—synonym of V. curtisiae (sect. Erpetion)
Viola hederacea subsp. fuscoviolacea L. G. Adams—synonym of V. fuscoviolacea (sect. Erpetion)
Viola hederacea subsp. hederacea—synonym of V. hederacea (sect. Erpetion)
Viola hederacea subsp. perreniformis L. G. Adams—synonym of V. perreniformis (sect. Erpetion)
Viola hederacea subsp. seppeltiana L. G. Adams—probable synonym of V. sieberiana (sect. Erpetion)
Viola hederacea subsp. sieberiana (Spreng.) L. G. Adams—synonym of V. sieberiana (sect. Erpetion)
Viola hederacea var. elatines DC.—synonym of V. banksii (sect. Erpetion)
Viola hederacea var. genuina Domin.—synonym of V. hederacea (sect. Erpetion)
Viola hediniana W. Becker—(sect. Chamaemelanium)
Viola heldreichiana Boiss.—(sect. Melanium, subsect. Bracteolatae)
Viola helena C. N. Forbes & Lydgate—(sect. Nosphinium, subsect. Nosphinium)
Viola helioscopia Hillebr.—synonym of V. chamissoniana (sect. Nosphinium, subsect. Nosphninium)
Viola hemsleyana Calderón—(sect. Nosphinium, subsect. Mexicanae)
Viola henriquesii (Willk. ex Cout.) W. Becker—(sect. Melanium, subsect. Bracteolatae)
Viola henryi H. Boissieu—(sect. Viola, subsect. Rostratae)
Viola herbivaga Ridl.—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola herzogii (W. Becker) Bornm.—(sect. Melanium, subsect. Bracteolatae)
Viola heterocarpa Borbás—hybrid (V. mirabilis × V. rupestris; sect. Viola, subsect. Rostratae)
Viola heterophylla subsp. euboa (Halácsy) W. Becker—synonym of V. euboea (sect. Melanium, subsect. Bracteolatae)
Viola heterophylla subsp. graeca (W. Becker) W. Becker—synonym of V. graeca (sect. Melanium, subsect. Bracteolatae)
Viola heterosepala Boiss. & Heldr.—synonym of V. aetolica (sect. Melanium, subsect. Bracteolatae)
Viola hichitoana Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola hidakana Nakai—synonym of V. brevistipulata (sect. Chamaemelanium)
Viola hideoi Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola hieronymi W. Becker—(sect. Sempervivum)
Viola hillii W. Becker—(sect. Rosulatae)
Viola himalayensis W. Becker—synonym of V. rupestris (sect. Viola, subsect. Rostratae)
Viola hirsutula Brainerd—(sect. Nosphinium, subsect. Borealiamericanae)
Viola hirta L.—(sect. Viola, subsect. Viola)
Viola hirta var. collina (Besser) Regel—synonym of V. collina (sect. Viola, subsect. Viola)
Viola hirta var. japonica Maxim.—synonym of V. hondoensis (sect. Viola, subsect. Viola)
Viola hirtiformis Wiesb.—hybrid (V. ambigua × V. hirta; sect. Viola, subsect. Viola)
Viola hirtipedoides W. Becker—synonym of V. hirtipes (sect. Plagiostigma, subsect. Patellares)
Viola hirtipes S. Moore—(sect. Plagiostigma, subsect. Patellares)
Viola hispida Lam.—(sect. Melanium, subsect. Bracteolatae)
Viola hissarica Juz.—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola hollickii House—hybrid (V. affinis × V. fimbriatula; sect. Nosphinium, subsect. Borealiamericanae)
Viola holmiana House—hybrid (V. brittoniana × V. emarginata; sect. Nosphinium, subsect. Borealiamericanae)
Viola hondoensis W. Becker & H. Boissieu—(sect. Viola, subsect. Viola)
Viola hookeri Franch., non Thomson ex Hook. f.—synonym of V. bulbosa (sect. Plagiostigma, subsect. Bulbosae)
Viola hookeri Thomson ex Hook. f.—synonym of V. sikkimensis (sect. Plagiostigma, subsect. Stolonosae)
Viola hookeriana Kunth—(sect. Nosphinium, subsect. Mexicanae)
Viola hosakae H. St. John—synonym of V. kauaensis var. hosakae (sect. Nosphinium, subsect. Nosphinium)
Viola hosoii Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola hossei W. Becker—(sect. Plagiostigma, subsect. Australasiaticae)
Viola howellii A. Gray—(sect. Nosphinium, subsect. Langsdorffianae)
Viola hsinganensis Taken.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola huanucoensis W. Becker—synonym of V. boliviana (sect. Leptidium)
Viola huesoensis Martic.—(sect. Relictium)
Viola huidobrii Gay—(sect. Viola, subsect. Rostratae)
Viola huizhouensis Y. S. Huang & Q. Fan—(sect. Plagiostigma, subsect. Diffusae)
Viola hultenii W. Becker—(sect. Plagiostigma, subsect. Stolonosae)
Viola humboldtii Triana & Planch.—synonym of V. dombeyana (sect. Leptidium)
Viola humboldtii var. cuneata W. Becker—synonym of V. dombeyana (sect. Leptidium)
Viola humboldtii var. renifolia Britton—synonym of V. mandonii (sect. Leptidium)
Viola humilis Kunth—(sect. Nosphinium, subsect. Mexicanae)
Viola hunanensis Hand.-Mazz.—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola hungarica Degen & Sabr.—hybrid (V. ambigua × V. odorata; sect. Viola, subsect. Viola)
Viola hupeiana W. Becker—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola hybanthoides W. B. Liao & Q. Fan—(sect. Danxiaviola)
Viola hymettia Boiss. & Heldr.—(sect. Melanium, subsect. Bracteolatae)
Viola hyperborea (Rupr.) Vl. V. Nikitin (pro hybr.)—synonym of V. suecica subsp. suecica (sect. Plagiostigma, subsect. Stolonosae)
Viola hypoleuca Hayata—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola hyrcanica Vl. V. Nikitin—hybrid (V. reichenbachiana × V. caspia (“V. sieheana”); sect. Viola, subsect. Rostratae)
Viola ibukiana Makino—hybrid (V. albida (V. chaerophylloides) × V. violacea; sect. Plagiostigma, subsect. Patellares)
Viola ignobilis Rupr.—synonym of V. odorata (sect. Viola, subsect. Viola)
Viola igoschinae Vl. V. Nikitin—hybrid (V. canina × V. mauritii; sect. Viola, subsect. Rostratae)
Viola ikedaeana W. Becker ex Taken.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola ilvensis (W. Becker) Arrigoni—synonym of V. corsica subsp. ilvensis (sect. Melanium, subsect. Bracteolatae)
Viola imberbis Ledeb.—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola impatiens H. Lév.—synonym of V. delavayi (sect. Chamaemelanium)
Viola improcera L. G. Adams—(sect. Erpetion)
Viola improvisa Vl. V. Nikitin—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola incisa Turcz.—hybrid (V. ingolensis × [unknown]; sect. Plagiostigma, subsect. Patellares)
Viola incissecta Vl. V. Nikitin—hybrid (V. ingolensis × [unknown] (V. incisa) × V. multifida; sect. Plagiostigma, subsect. Patellares)
Viola incognita Brainerd—(sect. Plagiostigma, subsect. Stolonosae)
Viola inconspicua Blume—(sect. Plagiostigma, subsect. Patellares)
Viola inconspicua subsp. dielsiana W. Becker—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola inconspicua subsp. nagasakiensis (W. Becker) J. C. Wang & T. C. Huang—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola indica W. Becker—(sect. Viola, subsect. Viola)
Viola indivisa Greene—hybrid (V. pedatifida × V. pratincola; sect. Nosphinium, subsect. Borealiamericanae)
Viola ingolensis Elisafenko—(sect. Plagiostigma, subsect. Patellares)
Viola insessa House—hybrid (V. cucullata × V. nephrophylla; sect. Nosphinium, subsect. Borealiamericanae)
Viola insignis Pollard, non K. Richt.—synonym of V. septemloba (sect. Nosphinium, subsect. Borealiamericanae)
Viola insolita House—hybrid (V. brittoniana × V. communis; sect. Nosphinium, subsect. Borealiamericanae)
Viola insularis Nakai—synonym of V. kusanoana (sect. Viola, subsect. Rostratae)
Viola integerrima Phil.—synonym of V. portalesia (sect. Rubellium)
Viola interjecta Borbás—hybrid (V. ambigua × V. hirta; sect. Viola, subsect. Viola)
Viola intermedia Rchb.—hybrid (V. reichenbachiana × V. riviniana; sect. Viola, subsect. Rostratae)
Viola interposita Kitag.—synonym of V. tenuicornis subsp. tenuicornis (sect. Plagiostigma, subsect. Patellares)
Viola intersita Beck—hybrid (V. canina × V. riviniana; sect. Viola, subsect. Rostratae)
Viola ircutiana Turcz.—synonym of V. tenuicornis subsp. ircutiana (sect. Plagiostigma, subsect. Patellares)
Viola irinae Zolot.—synonym of V. prionantha (sect. Plagiostigma, subsect. Patellares)
Viola isaurica Contandr. & Quézel—(sect. Viola, subsect. Viola)
Viola iselensis W. Becker—hybrid (V. reichenbachiana × V. rupestris; sect. Viola, subsect. Rostratae)
Viola ishidoyana Nakai—synonym of V. phalacrocarpa (sect. Plagiostigma, subsect. Patellares)
Viola isopetala Juz.—synonym of V. caspia (sect. Viola, subsect. Rostratae)
Viola ivonis Erben—(sect. Melanium, subsect. Bracteolatae)
Viola iwagawae Makino—(sect. Plagiostigma, subsect. Patellares)
Viola jagellonica Zapal.—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola jalapaensis W. Becker—(sect. Plagiostigma, subsect. Stolonosae)
Viola jangiensis W. Becker—(sect. Viola, subsect. Viola)
Viola japonica Korth., non Langsd. ex Ging.—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola japonica Langsd. ex Ging.—(sect. Plagiostigma, subsect. Patellares)
Viola japonica var. stenopetala Franch. ex H. Boissieu—synonym of V. japonica (sect. Plagiostigma, subsect. Patellares)
Viola jaubertiana Marès & Vigin.—(sect. Viola, subsect. Viola)
Viola javanica W. Becker—(sect. Plagiostigma, subsect. Stolonosae)
Viola jeniseensis Zuev—synonym of V. prionantha (sect. Plagiostigma, subsect. Patellares)
Viola jettmarii Hand.-Mazz.—hybrid (V. ingolensis × [unknown]; sect. Plagiostigma, subsect. Patellares)
Viola jindoensis M. Kim—hybrid (V. albida (V. chaerophylloides) × V. violacea; sect. Plagiostigma, subsect. Patellares)
Viola jinggangshanensis Z. L. Ning & J. P. Liao—(sect. Plagiostigma, subsect. Diffusae)
Viola jizushanensis S. H. Huang—synonym of V. rockiana (sect. Chamaemelanium)
Viola joannis-wagneri Kárpáti—hybrid (V. hirta × V. riviniana; sect. Viola)
Viola joergensenii W. Becker—(sect. Triflabellium)
Viola johnstonii W. Becker—(sect. Relictium)
Viola jooi Janka—(sect. Plagiostigma, subsect. Patellares)
Viola jordanii Hanry—(sect. Viola, subsect. Rostratae)
Viola josephii J. M. Watson & A. R. Flores—hybrid (V. triflabellata × [unknown]; sect. Triflabellium)
Viola jugalis Ridl.—synonym of V. sumatrana (sect. Plagiostigma, subsect. Australasiaticae)
Viola juzepczukii Vl. V. Nikitin—hybrid (V. dissecta × V. mandshurica; sect. Plagiostigma, subsect. Patellares)
Viola kalbreyeri W. Becker—synonym of V. humilis (sect. Nosphinium, subsect. Mexicanae)
Viola kalksburgensis Wiesb.—hybrid (V. alba × V. suavis; sect. Viola, subsect. Viola)
Viola kamtschadalorum W. Becker & Hultén—synonym of V. langsdorffii (sect. Nosphinium, subsect. Langsdorffianae)
Viola kamtschatica var. pekinensis Regel—synonym of V. pekinensis (sect. Plagiostigma, subsect. Patellares)
Viola kamtschatika Ging.—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola kanoi Sasaki—synonym of V. biflora (sect. Chamaemelanium)
Viola kansuensis var. oblonga W. Becker—synonym of V. pendulicarpa (sect. Viola, subsect. Rostratae)
Viola kansuensis W. Becker—synonym of V. pendulicarpa (sect. Viola, subsect. Rostratae)
Viola kapsanensis Nakai—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola karakalensis Klokov—synonym of V. kitaibeliana (sect. Melanium, subsect. Bracteolatae)
Viola karakulensis Vl. V. Nikitin & O. Baranova—hybrid (V. canina × V. collina; sect. Viola)
Viola karlreicheana Sanso, M. Seo & Xifreda—synonym of V. montagnei (sect. Rosulatae)
Viola kashmiriana W. Becker—synonym of V. prionantha (sect. Plagiostigma, subsect. Patellares)
Viola kauaensis A. Gray—(sect. Nosphinium, subsect. Nosphinium)
Viola kauaensis A. Gray var. kauaensis—(sect. Plagiostigma, subsect. Patellares)
Viola kauaensis var. hosakae (H. St. John) Havran & Ching Harbin—(sect. Plagiostigma, subsect. Patellares)
Viola kawakamii Hayata—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola kawakamii var. stenopetala Hayata—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola keiskei f. hirsutior W. Becker—synonym of V. sphaerocarpa (sect. Plagiostigma, subsect. Patellares)
Viola keiskei Miq.—(sect. Plagiostigma, subsect. Patellares)
Viola keiskei subsp. transmaritima W. Becker—synonym of V. pacifica (sect. Plagiostigma, subsect. Patellares)
Viola kermesina W. Becker—(sect. Rosulatae)
Viola kerneri Wiesb.—hybrid (V. hirta × V. suavis; sect. Viola, subsect. Viola)
Viola kiangsiensis W. Becker—synonym of V. kosanensis (sect. Viola, subsect. Rostratae)
Viola kireevskiana Arbuzova—fossil
Viola kishidae Nakai—synonym of V. brevistipulata (sect. Chamaemelanium)
Viola kisoana Nakai—hybrid (V. mandshurica × V. variegata var. nipponica; sect. Plagiostigma, subsect. Patellares)
Viola kitaibeliana Schult.—(sect. Melanium, subsect. Bracteolatae)
Viola kitaibeliana var. rafinesquei (Greene) Fernald—synonym of V. rafinesquei (sect. Melanium, subsect. Cleistogamae)
Viola kitamiana Nakai—(sect. Chamaemelanium)
Viola kizildaghensis Dinç & Yıld.—(sect. Viola, subsect. Viola)
Viola kjellbergii Melch.—(sect. Plagiostigma, subsect. Stolonosae)
Viola klineana (Kupff.) W. Becker—hybrid (V. canina (V. nemoralis) × V. uliginosa; sect. Viola, subsect. Rostratae)
Viola klingeana Ronniger—hybrid (V. canina × V. uliginosa; sect. Viola, subsect. Rostratae)
Viola klopotovi W. Becker—hybrid (V. epipsila × V. selkirkii; sect. Plagiostigma)
Viola klossii Ridl.—synonym of V. papuana (sect. Viola, subsect. Rostratae)
Viola komarovii W. Becker—synonym of V. sacchalinensis (sect. Viola, subsect. Rostratae)
Viola kopaonikensis Pančić ex Tomović & Niketić—(sect. Melanium, subsect. Bracteolatae)
Viola koraiensis Nakai—synonym of V. sacchalinensis (sect. Viola, subsect. Rostratae)
Viola korinchensis Ridl.—synonym of V. sumatrana (sect. Plagiostigma, subsect. Australasiaticae)
Viola kosanensis Hayata—(sect. Viola, subsect. Rostratae)
Viola kosaninii (Degen) Hayek—(sect. Delphiniopsis)
Viola kouliana Bhellum & Magotra—(sect. Sclerosium)
Viola kozo-poljanskii Grosset—hybrid (V. odorata × V. suavis; sect. Viola, subsect. Viola)
Viola krascheninnikoviorum Vl. V. Nikitin—hybrid (V. pumila × V. rupestris; sect. Viola, subsect. Rostratae)
Viola krugiana W. Becker—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola kunawarensis auct.—synonym of V. kunawurensis (sect. Himalayum)
Viola kunawarensis f. longifolia C. J. Wang—synonym of V. kunawurensis (sect. Himalayum)
Viola kunawarensis var. angustifolia W. Becker—synonym of V. kunawurensis (sect. Himalayum)
Viola kunawurensis Royle—(sect. Himalayum)
Viola kupfferi Klokov—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola kupfferiana W. Becker—hybrid (V. canina × V. uliginosa; sect. Viola, subsect. Rostratae)
Viola kurilensis Nakai—synonym of V. langsdorffii (sect. Nosphinium, subsect. Langsdorffianae)
Viola kusanoana Makino—(sect. Viola, subsect. Rostratae)
Viola kusnezowiana W. Becker—(sect. Chamaemelanium)
Viola kwangtungensis Melch.—(sect. Plagiostigma, subsect. Australasiaticae)
Viola labradorica Schrank—(sect. Viola, subsect. Rostratae)
Viola laciniata (H. Boissieu) Koidz.—synonym of V. brevistipulata (sect. Chamaemelanium)
Viola laciniosa A. Gray—synonym of V. acuminata subsp. grandistipulata (sect. Viola, subsect. Rostratae)
Viola lacmonica Hausskn.—hybrid (V. aetolica × V. orphanidis; sect. Melanium, subsect. Bracteolatae)
Viola lactea Sm.—(sect. Viola, subsect. Rostratae)
Viola lactiflora Nakai—(sect. Plagiostigma, subsect. Patellares)
Viola lagaipensis D. M. Moore—synonym of V. kjellbergii (sect. Plagiostigma, subsect. Stolonosae)
Viola lainzii P. Monts.—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola lanaiensis W. Becker—(sect. Nosphinium, subsect. Nosphinium)
Viola lanceolata L.—(sect. Plagiostigma, subsect. Stolonosae)
Viola lanceolata subsp. occidentalis (A. Gray) N. H. Russell—synonym of V. occidentalis (sect. Plagiostigma, subsect. Stolonosae)
Viola lanceolata subsp. vittata (Greene) N. H. Russell—synonym of V. vittata (sect. Plagiostigma, subsect. Stolonosae)
Viola lanceolata var. vittata (Greene) Weath. & Griscom—synonym of V. vittata (sect. Plagiostigma, subsect. Stolonosae)
Viola langeana Valentine—(sect. Melanium, subsect. Bracteolatae)
Viola langloisii Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola langsdorffii Fisch. ex Ging.—(sect. Nosphinium, subsect. Langsdorffianae)
Viola lanifera W. Becker—(sect. Rosulatae)
Viola laricicola Marcussen—(sect. Viola, subsect. Rostratae)
Viola lasczinskyi (Zuev) Baikov—synonym of V. uniflora (sect. Chamaemelanium)
Viola lasiostipes Nakai—synonym of V. muehldorfii (sect. Chamaemelanium)
Viola latisepala Wettst.—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola latistipula Hemsl.—synonym of V. flagelliformis (sect. Chamaemelanium)
Viola latiuscula Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola lavandulacea E. P. Bicknell—hybrid (V. cucullata × V. emarginata; sect. Nosphinium, subsect. Borealiamericanae)
Viola lavrenkoana Klokov—synonym of V. hymettia (sect. Melanium, subsect. Bracteolatae)
Viola lechlerii Griseb.—synonym of V. huidobrii (sect. Viola, subsect. Rostratae)
Viola leconteana G. Don—synonym of V. blanda (sect. Plagiostigma, subsect. Stolonosae)
Viola lehmannii subsp. cordifolia W. Becker—synonym of V. atroseminalis H. E. Ballard, ined. (sect. Leptidium)
Viola lehmannii subsp. ovalifolia W. Becker—synonym of V. lehmanii (sect. Leptidium)
Viola lehmannii W. Becker ex H. E. Ballard & P. Jørg.—(sect. Leptidium)
Viola lepida Jord.—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola leptosepala Greene—synonym of V. cucullata (sect. Nosphinium, subsect. Borealiamericanae)
Viola leucopetala Greene—synonym of V. labradorica (sect. Rostratae)
Viola leveillei H. Boissieu—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola leyboldiana Phil.—(sect. Sempervivum)
Viola lianhuashanensis C. J. Wang & K. Sun—synonym of V. bambusetorum (sect. Plagiostigma, subsect. Patellares)
Viola liaosiensis P. Y. Fu & Y. C. Teng—synonym of V. pekinensis (sect. Plagiostigma, subsect. Patellares)
Viola libanotica Boiss.—(sect. Viola, subsect. Viola)
Viola lii Kitag.—synonym of V. dissecta (sect. Plagiostigma, subsect. Patellares)
Viola lilascens Heldr. ex Boiss.—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola lilliputana Iltis & H. E. Ballard—(sect. Inconspicuiflos)
Viola lilloana W. Becker—(sect. Rosulatae)
Viola limbarae (Merxm. & W. Lippert) Arrigoni—synonym of V. corsica subsp. limbarae (sect. Melanium, subsect. Bracteolatae)
Viola limprichtiana W. Becker—synonym of V. lactiflora (sect. Plagiostigma, subsect. Patellares)
Viola lindeniana Turcz.—synonym of V. scandens var. scandens (sect. Leptidium)
Viola linguifolia Nutt.—synonym of V. praemorsa subsp. linguifolia (sect. Chamaemelanium)
Viola lithion N. H. Holmgren & P. K. Holmgren—(sect. Chamaemelanium)
Viola litoralis Phil.—synonym of V. huesoensis (sect. Relictium)
Viola litoralis Spreng.—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola livonica Vl. V. Nikitin—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola llullaillacoensis W. Becker—(sect. Rosulatae)
Viola lobata Benth.—(sect. Chamaemelanium)
Viola lobata Benth. subsp. lobata—(sect. Chamaemelanium)
Viola lobata subsp. integrifolia (S. Watson) R. J. Little—(sect. Chamaemelanium)
Viola lobata subsp. psychodes (Greene) Munz—synonym of V. lobata subsp. lobata (sect. Chamaemelanium)
Viola lobata var. integrifolia S. Watson—synonym of V. lobata subsp. integrifolia (sect. Chamaemelanium)
Viola lologensis (W. Becker) J. M. Watson—(sect. Sempervivum)
Viola longipedunculata Franch. & Sav.—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola longipetiolata Ricceri & Moraldo—synonym of V. eugeniae (sect. Melanium, subsect. Bracteolatae)
Viola longistipulata Hayata—synonym of V. philippica subsp. malesica (sect. Plagiostigma, subsect. Patellares)
Viola lovelliana Brainerd—(sect. Nosphinium, subsect. Borealiamericanae)
Viola lucens W. Becker—(sect. Plagiostigma, subsect. Diffusae)
Viola luciae Skottsb.—hybrid (V. chamissoniana × V. maviensis; sect. Nosphinium, subsect. Nosphinium)
Viola lucida Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola lucidifolia Newbro—synonym of V. missouriensis (sect. Nosphinium, subsect. Borealiamericanae)
Viola lunata Ridl.—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola lunellii Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola lungtungensis S. S. Ying—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola lutchuensis Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola lutea Huds.—(sect. Melanium, subsect. Bracteolatae)
Viola lutea Huds. subsp. lutea—synonym of V. lutea (sect. Melanium, subsect. Bracteolatae)
Viola lutea subsp. calaminaria (DC.) Rothm.—synonym of V. lutea (sect. Melanium, subsect. Bracteolatae)
Viola lutea subsp. sudetica (Willd.) W. Becker—synonym of V. lutea (sect. Melanium, subsect. Bracteolatae)
Viola lutea var. westfalica A. A. H. Schulz—synonym of V. lutea (sect. Melanium, subsect. Bracteolatae)
Viola lyallii Hook. f.—(sect. Plagiostigma, subsect. Bilobatae)
Viola macedonica Boiss. & Heldr.—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola macloskeyi F. E. Lloyd—(sect. Plagiostigma, subsect. Stolonosae)
Viola macloskeyi subsp. pallens (Banks ex Ging.) M. S. Baker—synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola macloskeyi var. pallens (Banks ex Ging.) C. L. Hitchc.—synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola macloviana Gand.—synonym of V. maculata var. maculata (sect. Chilenium)
Viola macroceras Bunge—(sect. Plagiostigma, subsect. Patellares)
Viola macrotis Greene—synonym of V. cucullata (sect. Nosphinium, subsect. Borealiamericanae)
Viola maculata Cav.—(sect. Chilenium)
Viola maculata Cav. var. maculata—(sect. Chilenium)
Viola maculata f. chilensis Weibel—synonym of V. maculata var. maculata (sect. Chilenium)
Viola maculata f. constitucionensis Sparre—synonym of V. maculata var. maculata (sect. Chilenium)
Viola maculata f. fimbriata (Steud.) Weibel—synonym of V. maculata var. microphyllos (sect. Chilenium)
Viola maculata f. grandidentata (Kalela) Weibel—synonym of V. maculata var. maculata (sect. Chilenium)
Viola maculata f. munozii Sparre—synonym of V. maculata var. maculata (sect. Chilenium)
Viola maculata f. septentrionalis (Kalela) Weibel—synonym of V. maculata var. microphyllos (sect. Chilenium)
Viola maculata f. typica Weibel—synonym of V. maculata var. maculata (sect. Chilenium)
Viola maculata subsp. microphyllos (Poir.) Weibel—synonym of V. maculata var. microphyllos (sect. Chilenium)
Viola maculata var. buchtienii (Gand.) Weibel—synonym of V. maculata var. maculata (sect. Chilenium)
Viola maculata var. megaphylla Ging.—synonym of V. maculata var. maculata (sect. Chilenium)
Viola maculata var. microphyllos Poir.—(sect. Chilenium)
Viola maculata var. pubescens Reiche—synonym of V. maculata var. maculata (sect. Chilenium)
Viola magellanica G. Forst.—(sect. Chilenium)
Viola magellensis Porta & Rigo ex Strobl—(sect. Melanium, subsect. Bracteolatae)
Viola magnifica C. J. Wang & X. D. Wang—(sect. Plagiostigma, subsect. Patellares)
Viola magniflora Molina—synonym of V. magellanica (sect. Chilenium)
Viola mainlingensis S. Y. Chen—synonym of V. szetschwanensis (sect. Chamaemelanium)
Viola mairei H. Lév.—synonym of V. moupinensis (sect. Plagiostigma, subsect. Stolonosae)
Viola majchurensis Pissjauk.—(sect. Chamaemelanium)
Viola makranica Omer & Qaiser—synonym of V. behboudiana (sect. Sclerosium)
Viola malteana House—hybrid (V. labradorica × V. rostrata; sect. Viola, subsect. Rostratae)
Viola malvina Ridl.—synonym of V. yunnanensis (sect. Plagiostigma, subsect. Diffusae)
Viola manaslensis F. Maek.—synonym of V. szetschwanensis (sect. Chamaemelanium)
Viola mandonii W. Becker—(sect. Leptidium)
Viola mandshurica f. albiflora P. Y. Fu & Y. C. Teng—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola mandshurica f. ciliata (Nakai) F. Maek.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola mandshurica f. glabra (Nakai) Hiyama ex Maek.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola mandshurica f. macrantha (Maxim.) Nakai & Kitag.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola mandshurica subsp. nagasakiensis W. Becker—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola mandshurica var. ciliata Nakai—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola mandshurica var. glabra Nakai—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola mandshurica W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola maoershanensis Y. S. Chen & Q. E. Yang—(sect. Plagiostigma, subsect. Stolonosae)
Viola marcelorosasii J. M. Watson & A. R. Flores—(sect. Relictium)
Viola mariae Pînzaru—synonym of V. danielae (sect. Melanium, subsect. Bracteolatae)
Viola mariae W. Becker—(sect. Viola, subsect. Rostratae)
Viola marihelenae Vl. V. Nikitin—hybrid (V. arvensis × V. tricolor; sect. Melanium, subsect. Bracteolatae)
Viola maritima (Schweigg.) Tzvelev—synonym of V. tricolor (subsp. curtisii; sect. Melanium, subsect. Bracteolatae)
Viola markgrafii W. Becker—hybrid (V. dukadjinica × V. albanica; sect. Melanium, subsect. Bracteolatae)
Viola maroccana (Maire) Maire—synonym of V. alba subsp. dehnhardtii (sect. Viola, subsect. Viola)
Viola martinicensis L. Hahn—synonym of V. stipularis (sect. Leptidium)
Viola marylandica House—hybrid (V. brittoniana × V. sagittata; sect. Nosphinium, subsect. Borealiamericanae)
Viola matczkasensis Vl. V. Nikitin—hybrid (V. collina × V. mirabilis; sect. Viola)
Viola matsudae Hayata—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola matutina Klokov—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola mauritii Tepl.—(sect. Viola, subsect. Rostratae)
Viola maviensis H. Mann—(sect. Nosphinium, subsect. Nosphinium)
Viola maximowicziana Makino—(sect. Plagiostigma, subsect. Patellares)
Viola maymanica Grey-Wilson—(sect. Spathulidium)
Viola mccabeiana M. S. Baker—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola mearnsii Merr.—(sect. Plagiostigma, subsect. Stolonosae)
Viola mearnsii Standl.—synonym of V. eminii (sect. Abyssinium)
Viola melissifolia Greene—hybrid (V. cucullata × V. septentrionalis; sect. Nosphinium, subsect. Borealiamericanae)
Viola membranacea W. Becker—(sect. Inconspicuiflos)
Viola menitzkii Vl. V. Nikitin—hybrid (V. arvensis × V. occulta; sect. Melanium)
Viola mercurii Orph. ex Halácsy—(sect. Melanium, subsect. Ebracteatae)
Viola merkensteinensis Wiesb.—hybrid (V. collina × V. odorata; sect. Viola, subsect. Viola)
Viola merrilliana W. Becker—(sect. Plagiostigma, subsect. Bilobatae)
Viola merxmuelleri Erben—(sect. Melanium, subsect. Bracteolatae)
Viola mesadensis W. Becker—(sect. Triflabellium)
Viola methodiana Const. & Gand.—synonym of V. scorpiuroides (sect. Xylinosium)
Viola miaolingensis Y. S. Chen—(sect. Plagiostigma, subsect. Patellares)
Viola micrantha Turcz., non J. & C. Presl—synonym of V. acuminata subsp. acuminata (sect. Viola, subsect. Rostratae)
Viola micranthella Wedd.—(sect. Sempervivum)
Viola microcentra W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola microceras Rupr.—synonym of V. biflora (sect. Chamaemelanium)
Viola microdonta Chang—synonym of V. collina (sect. Viola, subsect. Viola)
Viola microphylla Phil.—synonym of V. philippii (sect. Rosulatae)
Viola microphyllos f. septentrionalis Kalela—synonym of V. maculata var. microphyllos (sect. Chilenium)
Viola microphyllos Poir.—synonym of V. maculata var. microphyllos (sect. Chilenium)
Viola miersii Bertero ex Steud.—synonym of V. pusilla (sect. Subandinium)
Viola milanae Vl. V. Nikitin—synonym of V. dissecta (sect. Plagiostigma, subsect. Patellares)
Viola minima Arbuzova, non M. S. Baker —fossil, in need of a replacement name
Viola minima M. S. Baker—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola minor (Makino) Makino—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola minuscula Greene—(sect. Plagiostigma, subsect. Stolonosae)
Viola minuta M. Bieb.—(sect. Melanium, subsect. Bracteolatae)
Viola minuta M. Bieb. subsp. minuta—synonym of V. minuta (sect. Melanium, subsect. Bracteolatae)
Viola minuta subsp. dagestanica (Rupr.) Vl. V. Nikitin—synonym of V. minuta (sect. Melanium, subsect. Bracteolatae)
Viola minuta subsp. meyeriana (Rupr.) Vl. V. Nikitin—synonym of V. minuta (sect. Melanium, subsect. Bracteolatae)
Viola minutiflora Phil.—(sect. Subandinium)
Viola miocenica Arbuzova—fossil
Viola mirabilis f. latisepala W. Becker—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola mirabilis L.—(sect. Viola, subsect. Rostratae)
Viola mirabilis subsp. subglabra (Ledeb.) Zuev—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola mirabilis var. brachysepala (Maxim.) Regel—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola mirabilis var. brevicalcarata Nakai—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola mirabilis var. glaberrima W. Becker—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola mirabilis var. platysepala Kitag.—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola mirabilis var. subglabra Ledeb.—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola miranda W. Becker—synonym of V. sacchalinensis (sect. Viola, subsect. Rostratae)
Viola missouriensis Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola mistassinica Greene—synonym of V. renifolia (sect. Plagiostigma, subsect. Stolonosae)
Viola mistura House—hybrid (V. sagittata × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola mixta A. Kern.—hybrid (V. canina × V. reichenbachiana; sect. Viola, subsect. Rostratae)
Viola miyabei Makino—synonym of V. hirtipes (sect. Plagiostigma, subsect. Patellares)
Viola miyajiana Koidz.—hybrid (V. albida (V. eizanensis) × V. yezoensis; sect. Plagiostigma, subsect. Patellares)
Viola miyakei Nakai—synonym of V. kusanoana (sect. Viola, subsect. Rostratae)
Viola modesta Fenzl—(sect. Melanium, subsect. Ebracteatae)
Viola modestula Klokov—synonym of V. modesta (sect. Melanium, subsect. Ebracteatae)
Viola modica House—hybrid (V. communis × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola molfinoana W. Becker—synonym of V. frigida (sect. Rosulatae)
Viola molisana Ricceri & Moraldo—synonym of V. eugeniae (sect. Melanium, subsect. Bracteolatae)
Viola mollicula House—hybrid (V. minuscula × V. primulifolia; sect. Plagiostigma, subsect. Stolonosae)
Viola monbeigii—synonym of V. belophylla (sect. Plagiostigma, subsect. Patellares)
Viola mongolica f. longisepala P. F. Fu & Y. C. Teng—synonym of V. pekinensis (sect. Plagiostigma, subsect. Patellares)
Viola mongolica Franch.—(sect. Plagiostigma, subsect. Patellares)
Viola montagnei Gay—(sect. Rosulatae)
Viola montagnei var. glandulosa Phil.—synonym of V. montagnei (sect. Rosulatae)
Viola montana auct., non L.—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola montana L.—rejected name; synonym of V. elatior, conserved name (sect. Viola, subsect. Rostratae)
Viola montanensis Rydb.—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola montcaunica Pau—(sect. Melanium, subsect. Bracteolatae)
Viola montivaga House—hybrid (V. septentrionalis × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola moupinensis Franch.—(sect. Plagiostigma, subsect. Stolonosae)
Viola moupinensis var. lijiangensis C. J. Wang—synonym of V. moupinensis (sect. Plagiostigma, subsect. Stolonosae)
Viola mrkvickiana Velen.—synonym of V. hertzogii (sect. Melanium, subsect. Bracteolatae)
Viola mucronulifera Hand.-Mazz.—(sect. Plagiostigma, subsect. Australasiaticae)
Viola muehldorfii Kiss—(sect. Chamaemelanium)
Viola muhlenbergiana Ging.—synonym of V. labradorica (sect. Rostratae)
Viola muhlenbergiana var. minor Hook.—synonym of V. labradorica (sect. Rostratae)
Viola muhlenbergii Torr.—synonym of V. labradorica (sect. Rostratae)
Viola mulfordiae Pollard—hybrid (V. brittoniana × V. fimbriatula; sect. Nosphinium, subsect. Borealiamericanae)
Viola muliensis Y. S. Chen & Q. E. Yang—(sect. Chamaemelanium)
Viola multifida Willd. ex Schult.—(sect. Plagiostigma, subsect. Patellares)
Viola multistolonifera C. J. Wang—synonym of V. bulbosa (sect. Plagiostigma, subsect. Bulbosae)
Viola munbyana Boiss. & Reut.—(sect. Melanium, subsect. Bracteolatae)
Viola munozensis W. Becker—synonym of V. rodriguezii (sect. Rosulatae)
Viola muriculata Greene—synonym of V. canadensis (sect. Chamaemelanium)
Viola murronensis Ricceri & Moraldo—synonym of V. eugeniae (sect. Melanium, subsect. Bracteolatae)
Viola muscoides Phil.—synonym of V. tridentata (sect. Tridens)
Viola mutsuensis W. Becker—synonym of V. kusanoana (sect. Viola, subsect. Rostratae)
Viola nagamiana T. Hashimoto—synonym of V. kosanensis (sect. Viola, subsect. Rostratae)
Viola nagasawae Makino & Hayata—(sect. Plagiostigma, subsect. Diffusae)
Viola nagasawae var. acutilabella (Hayata) Nakai—synonym of V. nagasawae (sect. Plagiostigma, subsect. Diffusae)
Viola najadum Wein—hybrid (V. riviniana × V. stagnina; sect. Viola, subsect. Rostratae)
Viola nana (DC. ex Ging.) Le Jol.—(sect. Melanium, subsect. Bracteolatae)
Viola nanlingensis J. S. Zhou & F. W. Xing—(sect. Plagiostigma, subsect. Diffusae)
Viola nannae R. E. Fr.—(sect. Abyssinium)
Viola nannei Pol.—(sect. Nosphinium, subsect. Mexicanae)
Viola nannei var. glaberrima W. Becker—synonym of V. nannei (sect. Nosphinium, subsect. Mexicanae)
Viola nantouensis S. S. Ying—synonym of V. philippica subsp. malesica (sect. Plagiostigma, subsect. Patellares)
Viola napae House—hybrid (V. communis × V. sororia), synonym of V. grandis (sect. Nosphinium, subsect. Borealiamericanae)
Viola napellifolia Nakai—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola napellifolia var. sieboldiana (Maxim.) Nakai—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola nassauvioides Phil.—(sect. Confertae)
Viola nebrodensis C. Presl—(sect. Melanium, subsect. Bracteolatae)
Viola neglecta F. W. Schmidt—hybrid (V. canina (V. nemoralis) × V. riviniana; sect. Viola, subsect. Rostratae)
Viola neglecta M. Bieb.—synonym of V. caspia (sect. Viola, subsect. Rostratae)
Viola neglectiformis Vl. V. Nikitin—hybrid (V. canina × V. tanaitica; sect. Viola, subsect. Rostratate)
Viola nelsonii W. Becker—synonym of V. scandens var. scandens (sect. Leptidium)
Viola nemoralis Kütz.—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola neogenica Mai & Walther—fossil
Viola neomexicana Greene—synonym of V. canadensis (sect. Chamaemelanium)
Viola nephrophylla Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola nephrophylla var. arizonica (Greene) Kearney & Peebles—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola nephrophylla var. cognata (Greene) C. L. Hitchc.—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola niederleinii W. Becker—(sect. Rosulatae)
Viola niijimensis Nakai—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola nikitinii Vasjukov—hybrid (V. mirabilis × V. sacchalinensis; sect. Viola, subsect. Rostratae)
Viola nikkoensis Nakai—synonym of V. tokubuchiana (sect. Plagiostigma, subsect. Patellares)
Viola nipponica Makino—synonym of V. phalacrocarpa (sect. Plagiostigma, subsect. Patellares)
Viola nitida Y. S. Chen & Q. E. Yang—(sect. Plagiostigma, subsect. Stolonosae)
Viola nivalis Benth.—synonym of V. bangii (sect. Sempervivum)
Viola nobilis W. Becker—(sect. Sempervivum)
Viola norvegica Wittr.—hybrid (V. arvensis × V. tricolor; sect. Melanium, subsect. Bracteolatae)
Viola notabilis E. P. Bicknell—hybrid (V. brittoniana × V. cucullata; sect. Nosphinium, subsect. Borealiamericanae)
Viola novae-angliae House—(sect. Nosphinium, subsect. Borealiamericanae)
Viola nubigena Leyb.—(sect. Subandinium)
Viola nuda W. Becker—(sect. Plagiostigma, subsect. Stolonosae)
Viola nudicaulis (W. Becker) S. Y. Chen—synonym of V. biflora (sect. Chamaemelanium)
Viola nuevoleonensis W. Becker—(sect. Nosphinium, subsect. Borealiamericanae)
Viola nujiangensis Y. S. Chen & X. H. Jin—(sect. Plagiostigma, subsect. Patellares)
Viola nummulariifolia All.—isonym of V. nummulariifolia Vill. (sect. Melanium, subsect. Pseudorupestres)
Viola nummulariifolia Vill.—(sect. Melanium, subsect. Pseudorupestres)
Viola nuttallii Pursh—(sect. Chamaemelanium)
Viola nuttallii subsp. vallicola (A. Nelson) Roy L. Taylor & MacBryde—synonym of V. vallicola var. vallicola (sect. Chamaemelanium)
Viola nuttallii var. bakeri (Greene) C. L. Hitchc.—synonym of V. bakeri (sect. Chamaemelanium)
Viola nuttallii var. linguifolia (Nutt.) Piper—synonym of V. praemorsa subsp. linguifolia (sect. Chamaemelanium)
Viola nuttallii var. vallicola (A. Nelson) H. St. John—synonym of V. vallicola var. vallicola (sect. Chamaemelanium)
Viola nuttallii var. venosa S. Watson—synonym of V. purpurea subsp. venosa (sect. Chamaemelanium)
Viola oahuensis C. N. Forbes—(sect. Nosphinium, subsect. Nosphinium)
Viola obituaria J. M. Watson & A. R. Flores—(sect. Sempervivum)
Viola obliqua Aiton—to be rejected as a nomen ambiguum, identity cannot be determined (sect. Nosphinium, subsect. Borealiamericanae)
Viola obliquifolia Turcz.—synonym of V. scandens var. scandens (sect. Leptidium)
Viola oblonga Blatt.—probable syn. of V. jordanii (sect. Rostratae)
Viola oblongosagittata f. ishizakii Yamam.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola oblongosagittata Nakai—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola oblongosagittata var. violascens Nakai—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola obtusa (Makino) Makino—(sect. Viola, subsect. Rostratae)
Viola obtusoacuminata T. Hashim. ex T. Shimizu—hybrid (V. acuminata × V. obtusa; sect. Viola, subsect. Rostratae)
Viola obtusogrypoceras Makino—hybrid (V. grypoceras × V. obtusa; sect. Viola, subsect. Rostratae)
Viola occidentalis (A. Gray) Howell—(sect. Plagiostigma, subsect. Stolonosae)
Viola occulta Lehm.—(sect. Melanium, subsect. Ebracteatae)
Viola ocellata Torr. & A. Gray—(sect. Chamaemelanium)
Viola odontocalycina Boiss.—(sect. Melanium, subsect. Bracteolatae)
Viola odorata L.—(sect. Viola, subsect. Viola)
Viola okinawensis K. Nakaj., nom. nud.—synonym of V. utchinensis (sect. Viola, subsect. Rostratae)
Viola okuharae F. Maek. ex T. Shimizu—hybrid (V. hirtipes × V. violacea var. makinoi; sect. Plagiostigma, subsect. Patellares)
Viola oldhamiana Nakai—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola oligoceps Chang—synonym of V. tienschiensis (sect. Plagiostigma, subsect. Patellares)
Viola oligyrtia Tiniakou—(sect. Viola, subsect. Rostratae)
Viola olimpia Beggiat.—hybrid (V. odorata × V. reichenbachiana; sect. Viola)
Viola orbelica Pančić—(sect. Melanium, subsect. Bracteolatae)
Viola orbiculata Geyer ex Holz.—(sect. Chamaemelanium)
Viola orbignyana J. Rémy—synonym of V. pygmaea (sect. Sempervivum)
Viola oreades M. Bieb.—(sect. Melanium, subsect. Bracteolatae)
Viola oreocallis Greene—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola orientalis (Maxim.) W. Becker—(sect. Chamaemelanium)
Viola orientalis (Maxim.) W. Becker subsp. orientalis—(sect. Chamaemelanium)
Viola orientalis subsp. xanthopetala (Nakai) Espeut—(sect. Chamaemelanium)
Viola orientalis var. conferta W. Becker—synonym of V. orientalis subsp. orientalis (sect. Chamaemelanium)
Viola orophila Wiesb.—hybrid (V. mirabilis × V. riviniana; sect. Viola, subsect. Rostratae)
Viola orphanidis Boiss.—(sect. Melanium, subsect. Bracteolatae)
Viola orphanidis Boiss. subsp. orphanidis—(sect. Melanium, subsect. Bracteolatae)
Viola orphanidis subsp. crinita Delip.—(sect. Melanium, subsect. Bracteolatae)
Viola orphanidis subsp. nicolai (Pant.) Valentine—synonym of V. orphanidis subsp. orphanidis (sect. Melanium, subsect. Bracteolatae)
Viola orthoceras Ledeb.—(sect. Melanium, subsect. Bracteolatae)
Viola ovalifolia W. Becker—synonym of V. yunnanensis (sect. Plagiostigma, subsect. Diffusae)
Viola ovalleana Phil.—(sect. Relictium)
Viola ovata Nutt.—synonym of V. fimbriatula (sect. Nosphinium, subsect. Borealiamericanae)
Viola ovata var. hicksii (Pollard) Pollard—synonym of V. fimbriatula (sect. Nosphinium, subsect. Borealiamericanae)
Viola ovato-oblonga (Miq.) Makino—(sect. Viola, subsect. Rostratae)
Viola oxyceras (S. Watson) Greene—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola oxyodontis H. E. Ballard—(sect. Nosphinium, subsect. Mexicanae)
Viola pachyrrhiza Boiss. & Hohen.—(sect. Spathulidium)
Viola pachysoma M. Sheader & J. M. Watson—(sect. Sempervivum)
Viola pacifica Juz.—(sect. Plagiostigma, subsect. Patellares)
Viola painteri Rose & House—(sect. Chamaemelanium)
Viola palatina Y. N. Lee—hybrid (V. albida (V. chaerophylloides) × V. japonica; sect. Plagiostigma, subsect. Patellares)
Viola palentina Losa—synonym of V. bubanii (sect. Melanium, subsect. Bracteolatae)
Viola pallascaensis W. Becker—(sect. Xanthidium)
Viola pallens (Banks ex Ging.) Brainerd—synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola pallens subsp. macloskeyi (F. E. Lloyd) M. S. Baker—synonym of V. macloskeyi (sect. Plagiostigma, subsect. Stolonosae)
Viola pallens var. subreptans J. Rousseau—synonym of V. minuscula (sect. Plagiostigma, subsect. Stolonosae)
Viola palmaris Buch.-Ham. ex Ging.—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola palmata L.—(sect. Nosphinium, subsect. Borealiamericanae)
Viola palmata L. var. palmata—(sect. Nosphinium, subsect. Borealiamericanae)
Viola palmata var. heterophylla Elliott—synonym of V. edulis (sect. Nosphinium, subsect. Borealiamericanae)
Viola palmata var. pedatifida (G. Don) Cronquist—synonym of V. pedatifida (sect. Nosphinium, subsect. Borealiamericanae)
Viola palmata var. sororia (Willd.) Pollard—synonym of V. sororia (sect. Nosphinium, subsect. Borealiamericanae)
Viola palmata var. triloba (Schwein.) Ging.—(sect. Nosphinium, subsect. Borealiamericanae)
Viola palmensis (Webb & Berthel.) Sauer—(sect. Melanium, subsect. Bracteolatae)
Viola palustris L.—(sect. Plagiostigma, subsect. Stolonosae)
Viola palustris L. subsp. palustris—synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola palustris subsp. brevipes M. S. Baker—synonym of V. brevipes (sect. Plagiostigma, subsect. Stolonosae)
Viola palustris subsp. juressii (Link ex K. Wein) Coutinho—synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola palustris subsp. pubifolia Kuta—synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola palustris var. moupinensis (Franch.) Franch.—synonym of V. moupinensis (sect. Plagiostigma, subsect. Stolonosae)
Viola palustroides (W. Becker) Tzvelev—synonym of V. suecica subsp. repens (sect. Plagiostigma, subsect. Stolonosae)
Viola papilionacea Pursh—misapplied, type is V. affinis [needs rejection proposal] (sect. Nosphinium, subsect. Borealiamericanae)
Viola papillaris Willd.—synonym of V. spathulata (sect. Spathulidium)
Viola papuana W. Becker & Pulle—(sect. Viola, subsect. Rostratae)
Viola paradoxa Lowe—(sect. Melanium, subsect. Bracteolatae)
Viola paravaginata H. Hara—synonym of V. moupinensis (sect. Plagiostigma, subsect. Stolonosae)
Viola parca House—hybrid (V. fimbriatula × V. septentrionalis; sect. Nosphinium, subsect. Borealiamericanae)
Viola parnonia Kit Tan, Sfikas & Vold—(sect. Melanium, subsect. Bracteolatae)
Viola parviflora Mutis ex L. f.—synonym of Pombalia parviflora (Mutis ex L. fil.) Paula-Souza (Violaceae)
Viola parvifolia Benth.—synonym of V. polycephala (sect. Sempervivum)
Viola parvula Tineo—(sect. Melanium, subsect. Ebracteatae)
Viola pascua W. Becker—synonym of V. eximia subsp. eximia (sect. Melanium, subsect. Bracteolatae)
Viola patagonica W. Becker—synonym of V. sacculus (sect. Sempervivum)
Viola patrinii f. glabra (Nakai) F. Maek.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola patrinii f. hispida W. Becker p. p.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola patrinii Ging.—(sect. Plagiostigma, subsect. Patellares)
Viola patrinii H. Boissieu & Capit., non DC.—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola patrinii Merr., non DC.—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola patrinii var. brevicalcarata Skvortsov—synonym of V. patrinii (sect. Plagiostigma, subsect. Patellares)
Viola patrinii var. caespitosa (D. Don) Ridl.—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola patrinii var. chinensis Ging.—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola patrinii var. laotiana H. Boissieu—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola patrinii var. macrantha Maxim.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola patrinii var. minor Makino—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola patrinii var. nepaulensis Ging.—synonym of V. betonicifolia (sect. Plagiostigma, subsect. Patellares)
Viola peckiana House—hybrid (V. sororia × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola pectinata E. P. Bicknell—(sect. Nosphinium, subsect. Borealiamericanae)
Viola pedata L.—(sect. Nosphinium, subsect. Pedatae)
Viola pedata L. subsp. pedata—(sect. Nosphinium, subsect. Pedatae)
Viola pedata subsp. cuneatiloba (Brainerd ex Fernald) H. E. Ballard, ined.—(sect. Nosphinium, subsect. Pedatae)
Viola pedata subsp. flabellata (D. Don) H. E. Ballard, ined.—(sect. Nosphinium, subsect. Pedatae)
Viola pedata var. atropurpurea Ging.—synonym of V. pedata subsp. pedata (sect. Nosphinium, subsect. Pedatae)
Viola pedatifida G. Don—(sect. Nosphinium, subsect. Borealiamericanae)
Viola pedatifida subsp. brittoniana (Pollard) L. E. McKinney—synonym of V. brittoniana (sect. Nosphinium, subsect. Borealiamericanae)
Viola pedatifida var. brittoniana (Pollard) R. J. Little & L. E. McKinney—synonym of V. brittoniana (sect. Nosphinium, subsect. Borealiamericanae)
Viola pedunculata subsp. tenuifolia M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola pedunculata Torr. & A. Gray—(sect. Chamaemelanium)
Viola pedunculata Torr. & A. Gray subsp. pedunculata—(sect. Chamaemelanium)
Viola pekinensis (Regel) W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola pendulicarpa W. Becker—(sect. Viola, subsect. Rostratae)
Viola pensylvanica Michx.—synonym of V. pubescens (sect. Chamaemelanium)
Viola pentadactyla Fenzl—(sect. Melanium, subsect. Ebracteatae)
Viola pentelica Vierh.—synonym of V. alba subsp. dehnhardtii (sect. Viola, subsect. Viola)
Viola peramoena Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola perinensis W. Becker—(sect. Melanium, subsect. Bracteolatae)
Viola permixta Jord.—hybrid (V. hirta × V. odorata; sect. Viola, subsect. Viola)
Viola perpensa Greene—hybrid (V. pedatifida × V. sororia), synonym of V. bernardii (sect. Nosphinium, subsect. Borealiamericanae)
Viola perpera House—hybrid (V. hirsutula × V. sororia), synonym of V. cordifolia (sect. Nosphinium, subsect. Borealiamericanae)
Viola perplexa Gremli—hybrid (V. mirabilis × V. reichenbachiana; sect. Viola, subsect. Rostratae)
Viola perpusilla H. Boissieu—(sect. Plagiostigma, subsect. Patellares)
Viola perreniformis (L. G. Adams) R. J. Little & Leiper—(sect. Erpetion)
Viola persicariifolia Poir.—synonym of V. stipularis (sect. Leptidium)
Viola persicifolia Schreb.—synonym of V. elatior/stagnina (sensu Nikitin 2006; sect. Viola, subsect. Rostratae)
Viola petelotii W. Becker ex Gagnep.—(sect. Plagiostigma, subsect. Stolonosae)
Viola petraea f. albida W. Becker—synonym of V. petraea (sect. Sempervivum)
Viola petraea W. Becker—(sect. Sempervivum)
Viola phalacrocarpa Maxim.—(sect. Plagiostigma, subsect. Patellares)
Viola phalacrocarpoides Makino—synonym of V. phalacrocarpa (sect. Plagiostigma, subsect. Patellares)
Viola philippiana Greene—(sect. Rosulatae)
Viola philippica Cav.—(sect. Plagiostigma, subsect. Patellares)
Viola philippica f. candida (Kitag.) Kitag.—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola philippica f. intermedia (Kitag.) Kitag.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola philippica subsp. malesica W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola philippica subsp. munda W. Becker—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola philippica subsp. philippica—(sect. Plagiostigma, subsect. Patellares)
Viola philippica var. yunnanfuensis W. Becker—synonym of V. trichopetala (sect. Plagiostigma, subsect. Patellares)
Viola philippii Leyb.—(sect. Rosulatae)
Viola philippii var. arbuscula (Phil.) Reiche—synonym of V. philippii (sect. Rosulatae)
Viola phitosiana Erben—(sect. Melanium, subsect. Bracteolatae)
Viola physalodes Greene—synonym of V. vallicola var. vallicola (sect. Chamaemelanium)
Viola pichinchensis Turcz.—synonym of V. scandens var. scandens (sect. Leptidium)
Viola pilosa Blume—(sect. Viola, subsect. Viola)
Viola pinetorum Greene—(sect. Chamaemelanium)
Viola pinetorum Greene subsp. pinetorum—(sect. Chamaemelanium)
Viola pinetorum subsp. grisea (Jeps.) R. J. Little—(sect. Chamaemelanium)
Viola pinetorum var. grisea (Jeps.) R. J. Little—synonym of V. pinetorum subsp. grisea (sect. Chamaemelanium)
Viola pinnata L.—(sect. Plagiostigma, subsect. Patellares)
Viola pinnata subsp. multifida W. Becker—synonym of V. multifida (sect. Plagiostigma, subsect. Patellares)
Viola pinnata var. angustisecta W. Becker—synonym of V. multifida (sect. Plagiostigma, subsect. Patellares)
Viola pinnata var. chaerophylloides Regel—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola pinnata var. dissecta (Ledeb.) Regel—synonym of V. multifida (sect. Plagiostigma, subsect. Patellares)
Viola pinnata var. sieboldiana Maxim.—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola pitouchaoensis S. S. Ying—synonym of V. confusa (sect. Plagiostigma, subsect. Patellares)
Viola placida W. Becker—unresolved: protologue incomplete; type not in B (destroyed?). (sect. Plagiostigma)
Viola pluricaulis Borbás—hybrid (V. alba × V. odorata; sect. Viola, subsect. Viola)
Viola pluviae Marcussen, H. E. Ballard & Blaxland—(sect. Plagiostigma, subsect. Stolonosae)
Viola pobedimovae Ye. V. Serg.—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola poelliana Murr—hybrid (V. collina × V. hirta × V. odorata; sect. Viola, subsect. Viola)
Viola poetica Boiss. & Spruner—(sect. Melanium, subsect. Dispares)
Viola pogonantha W. W. Smith—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola poltavensis Vl. V. Nikitin—hybrid (V. elatior × V. riviniana; sect. Viola, subsect. Rostratae)
Viola polycephala H. E. Ballard & P. Jørg.—(sect. Sempervivum)
Viola polymorpha C. C. Chang—synonym of V. pendulicarpa (sect. Viola, subsect. Rostratae)
Viola polyodonta W. Becker—synonym of V. dacica (sect. Melanium, subsect. Bracteolatae)
Viola polypoda Turcz.—(sect. Subandinium)
Viola pontica W. Becker—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola popovae Vl. V. Nikitin—hybrid (V. canina (V. nemoralis subsp. nemoralis) × V. caspia (“V. sieheana”); sect. Viola, subsect. Rostratae)
Viola populifolia Greene—hybrid (V. palmata var. triloba × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola porphyrea R. Uechtr.—hybrid (synonym of V. collina; sect. Viola, subsect. Viola)
Viola portalesia Gay—(sect. Rubellium)
Viola porteriana Pollard—hybrid (V. cucullata × V. fimbriatula; sect. Nosphinium, subsect. Borealiamericanae)
Viola portulacea Leyb.—(sect. Sempervivum)
Viola praemorsa Douglas—(sect. Chamaemelanium)
Viola praemorsa Douglas subsp. praemorsa—(sect. Chamaemelanium)
Viola praemorsa subsp. arida M. S. Baker—synonym of V. praemorsa subsp. linguifolia (sect. Chamaemelanium)
Viola praemorsa subsp. flavovirens (Pollard) Fabijan—(sect. Chamaemelanium)
Viola praemorsa subsp. linguifolia (Nutt. ex Torr. & A. Gray) M. S. Baker—(sect. Chamaemelanium)
Viola praemorsa subsp. major (Hook.) M. S. Baker—synonym of V. vallicola var. major (sect. Chamaemelanium)
Viola praemorsa subsp. oregona M. S. Baker—synonym of V. praemorsa subsp. linguifolia (sect. Chamaemelanium)
Viola praemorsa var. altior Blankinship—synonym of V. praemorsa subsp. linguifolia (sect. Chamaemelanium)
Viola praemorsa var. flavovirens (Pollard) R. J. Little—synonym of V. praemorsa subsp. flavovirens (sect. Chamaemelanium)
Viola praemorsa var. linguifolia (Nutt.) M. Peck—synonym of V. praemorsa subsp. linguifolia (sect. Chamaemelanium)
Viola praemorsa var. major (Hook.) M. Peck—synonym of V. vallicola var. major (sect. Chamaemelanium)
Viola pratincola Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola prattii W. Becker—synonym of V. szetschwanensis (sect. Chamaemelanium)
Viola prenja Beck—synonym of V. pyrenaica (sect. Viola, subsect. Viola)
Viola priceana Pollard—synonym of V. communis (sect. Nosphinium, subsect. Borealiamericanae)
Viola pricei W. Becker—(sect. Plagiostigma, subsect. Diffusae)
Viola primorskajensis (W. Becker) Vorosch.—synonym of V. variegata subsp. primorskajensis (sect. Plagiostigma, subsect. Patellares)
Viola primulifolia L.—(sect. Plagiostigma, subsect. Stolonosae)
Viola primulifolia Loureiro, non L.—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola primulifolia subsp. occidentalis (A. Gray) L. E. McKinney & R. J. Little—synonym of V. occidentalis (sect. Plagiostigma, subsect. Stolonosae)
Viola primulifolia subsp. villosa (Eaton) N. H. Russell—synonym of V. primulifolia (sect. Plagiostigma, subsect. Stolonosae)
Viola primulifolia var. acuta (Bigelow) Torr. & A. Gray—synonym of V. primulifolia (sect. Plagiostigma, subsect. Stolonosae)
Viola primulifolia var. glabra Nakai—synonym of V. patrinii (sect. Plagiostigma, subsect. Patellares)
Viola primulifolia var. villosa Eaton—synonym of V. primulifolia (sect. Plagiostigma, subsect. Stolonosae)
Viola principis H. Boissieu—(sect. Plagiostigma, subsect. Stolonosae)
Viola principis var. acutifolia C. J. Wang—probable synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola prionantha Bunge—(sect. Plagiostigma, subsect. Patellares)
Viola prionantha subsp. jaunsariensis W. Becker—synonym of V. tienschiensis (sect. Plagiostigma, subsect. Patellares)
Viola prionantha var. incisa Kitag.—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola prionantha var. sylvatica Kitag.—synonym of V. prionantha (sect. Plagiostigma, subsect. Patellares)
Viola prionantha var. trichantha C. J. Wang—synonym of V. prionantha (sect. Plagiostigma, subsect. Patellares)
Viola prionosepala Greene—synonym of V. cucullata (sect. Nosphinium, subsect. Borealiamericanae)
Viola producta W. Becker—unresolved. Type Fiebrig 2529 in B, probably destroyed.
Viola prunellifolia Fisch. ex Ging.—synonym of V. patrinii (sect. Plagiostigma, subsect. Patellares)
Viola prunellifolia Kunth—synonym of V. humilis (sect. Nosphinium, subsect. Mexicanae)
Viola pruniflora Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola psammophila Phil.—synonym of V. polypoda (sect. Subandinium)
Viola pseudaetolica Tomović, Melovski & Niketić—(sect. Melanium, subsect. Bracteolatae)
Viola pseudasterias Reiche—synonym of V. polypoda (sect. Subandinium)
Viola pseudasterias var. psammophila (Phil.) Reiche—synonym of V. polypoda (sect. Subandinium)
Viola pseudoarcuata C. C. Chang—synonym of V. pendulicarpa (sect. Viola, subsect. Rostratae)
Viola pseudobambusetorum C. C. Chang—synonym of V. bambusetorum (sect. Plagiostigma, subsect. Patellares)
Viola pseudogracilis (A. Terracc.) Strobl ex Degen & Dörfl.—(sect. Melanium, subsect. Bracteolatae)
Viola pseudogracilis Strobl subsp. pseudogracilis—(sect. Melanium, subsect. Bracteolatae)
Viola pseudogracilis subsp. cassinensis (Strobl) Merxm.—(sect. Melanium, subsect. Bracteolatae)
Viola pseudograeca Erben—(sect. Melanium, subsect. Bracteolatae)
Viola pseudojaponica Nakai—synonym of V. philippica subsp. malesica (sect. Plagiostigma, subsect. Patellares)
Viola pseudomakinoi M. Mizush. ex T. Shimizu—hybrid (V. sieboldii f. variegata × V. violacea var. makinoi; sect. Plagiostigma, subsect. Patellares)
Viola pseudomirabilis H. J. Coste—(sect. Viola, subsect. Rostratae)
Viola pseudomonbeigii Chang—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola pseudoprionantha W. Becker—synonym of V. phalacrocarpa (sect. Plagiostigma, subsect. Patellares)
Viola pseudovulcanica W. Becker—synonym of V. volcanica (sect. Rosulatae)
Viola pteropoda Hemsl.—synonym of V. umbraticola (sect. Viola, subsect. Rostratae)
Viola pubescens Aiton—(sect. Chamaemelanium)
Viola pubescens var. eriocarpa Nutt.—synonym of V. pubescens (sect. Chamaemelanium)
Viola pubescens var. peckii House—synonym of V. pubescens (sect. Chamaemelanium)
Viola pubescens var. scabriuscula Schwein. ex Torr. & A. Gray—synonym of V. eriocarpa (sect. Chamaemelanium)
Viola pubifolia (Kuta) G. H. Loos—synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola pulchella Leyb. ex Reiche—synonym of V. escarapela (sect. Rosulatae)
Viola pulla W. Becker—probable synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola pulvinata Reiche—(sect. Subandinium)
Viola pumila Chaix—(sect. Viola, subsect. Rostratae)
Viola purpurea Kellogg—(sect. Chamaemelanium)
Viola purpurea Kellogg subsp. purpurea—(sect. Chamaemelanium)
Viola purpurea Kellogg var. purpurea—synonym of V. purpurea subsp. purpurea (sect. Chamaemelanium)
Viola purpurea subsp. atriplicifolia (Greene) M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola purpurea subsp. aurea (Kellogg) J. C. Clausen—synonym of V. aurea subsp. aurea (sect. Chamaemelanium)
Viola purpurea subsp. dimorpha M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola purpurea subsp. geophyta M. S. Baker—(sect. Chamaemelanium)
Viola purpurea subsp. integrifolia M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola purpurea subsp. mesophyta M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola purpurea subsp. mohavensis (M. S. Baker & J. C. Clausen) J. C. Clausen—synonym of V. aurea subsp. mohavensis (sect. Chamaemelanium)
Viola purpurea subsp. quercetorum (M. S. Baker & J. C. Clausen) R. J. Little—synonym of V. quercetorum (sect. Chamaemelanium)
Viola purpurea subsp. venosa (S. Watson) M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola purpurea subsp. xerophyta M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola purpurea var. aurea (Kellogg) M. S. Baker ex Jeps.—synonym of V. aurea subsp. aurea (sect. Chamaemelanium)
Viola purpurea var. charlestonensis (M. S. Baker & J. C. Clausen) S. L. Welsh & Reveal—synonym of V. charlestonensis (sect. Chamaemelanium)
Viola purpurea var. dimorpha (M. S. Baker & J. C. Clausen) J. T. Howell—synonym of V. purpurea subsp. dimorpha (sect. Chamaemelanium)
Viola purpurea var. grisea Jeps.—synonym of V. pinetorum subsp. grisea (sect. Chamaemelanium)
Viola purpurea var. integrifolia (M. S. Baker & J. C. Clausen) J. T. Howell—synonym of V. purpurea subsp. integrifolia (sect. Chamaemelanium)
Viola purpurea var. mesophyta (M. S. Baker & J. C. Clausen) J. T. Howell—synonym of V. purpurea subsp. mesophyta (sect. Chamaemelanium)
Viola purpurea var. mohavensis (M. S. Baker & J. C. Clausen) J. T. Howell—synonym of V. aurea subsp. mohavensis (sect. Chamaemelanium)
Viola purpurea var. venosa (S. Watson) Brainerd—synonym of V. purpurea subsp. venosa (sect. Chamaemelanium)
Viola pusilla Hook. & Arn.—synonym of V. subandina (sect. Subandinium)
Viola pusilla Poepp.—(sect. Subandinium)
Viola pusillima Wedd.—(sect. Sempervivum)
Viola pygmaea Juss. ex Poir.—(sect. Sempervivum)
Viola pynzarii Vl. V. Nikitin—hybrid (V. reichenbachiana × V. tanaitica; sect. Viola, subsect. Rostratae)
Viola pyrenaica Ramond ex DC.—(sect. Viola, subsect. Viola)
Viola pyrolifolia Poir.—synonym of V. maculata var. maculata (sect. Chilenium)
Viola quercetorum M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola raddeana Regel—(sect. Plagiostigma, subsect. Bilobatae)
Viola rafinesquei Greene—(sect. Melanium, subsect. Cleistogamae)
Viola ramiflora K. O. Yoo—synonym of V. hirtipes (sect. Plagiostigma, subsect. Patellares)
Viola ramosiana W. Becker—synonym of V. sikkimensis (sect. Plagiostigma, subsect. Stolonosae)
Viola ramosissima Turcz.—synonym of V. dombeyana (sect. Leptidium)
Viola rauliniana Erben—(sect. Melanium, subsect. Ebracteatae)
Viola raunsiensis W. Becker & Košanin—(sect. Melanium, subsect. Bracteolatae)
Viola rausii Erben—(sect. Melanium, subsect. Bracteolatae)
Viola ravida House—hybrid (V. hirsutula × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola redacta House—hybrid (V. fimbriatula × V. hirsutula; sect. Nosphinium, subsect. Borealiamericanae)
Viola redunca House—synonym of V. pedata subsp. pedata (sect. Nosphinium, subsect. Pedatae)
Viola regina J. M. Watson & A. R. Flores—(sect. Sempervivum)
Viola reichei f. gunckelii Sparre—synonym of V. reichei (sect. Chilenium)
Viola reichei Skottsb. ex Macloskie—(sect. Chilenium)
Viola reichenbachiana Jord. ex Boreau—(sect. Viola, subsect. Rostratae)
Viola reinii W. Becker—synonym of V. phalacrocarpa (sect. Plagiostigma, subsect. Patellares)
Viola renifolia A. Gray—(sect. Plagiostigma, subsect. Stolonosae)
Viola renifolia var. brainerdii (Greene) Fernald—synonym of V. renifolia (sect. Plagiostigma, subsect. Stolonosae)
Viola reniformis (Sweet) Endl.—synonym of V. banksii (sect. Erpetion)
Viola repens Schwein.—synonym of V. striata (sect. Viola, subsect. Rostratae)
Viola repens Turcz. ex Trautv. & C. A. Mey., non Schwein. —synonym of V. suecica subsp. repens (sect. Plagiostigma, subsect. Stolonosae)
Viola replicata W. Becker—(sect. Rosulatae)
Viola reschetnikovae Vl. V. Nikitin—hybrid (V. rupestris × V. selkirkii)
Viola reticulata Schltdl.—synonym of V. humilis (sect. Nosphinium, subsect. Mexicanae)
Viola retusa Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola rheophila Okamoto—synonym of V. annamensis (sect. Plagiostigma, subsect. Australasiaticae)
Viola rhizomata Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola rhodopeia W. Becker—(sect. Melanium, subsect. Bracteolatae)
Viola rhodosepala Kitag.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola rhombifolia Leyb.—(sect. Subandinium)
Viola rimosa P. Nikit. — fossil, synonym of Poliothyrsis maii Arbuzova & Zhil. (Salicaceae)
Viola ritschliana W. Becker—hybrid (V. canina × V. stagnina; sect. Viola, subsect. Rostratae)
Viola riviniana Rchb.—(sect. Viola, subsect. Rostratae)
Viola riviniana subsp. minor (Greg.) Valentine—synonym of V. riviniana (sect. Viola, subsect. Rostratae)
Viola robinsoniana House—hybrid (V. fimbriatula × V. palmata var. triloba; sect. Nosphinium, subsect. Borealiamericanae)
Viola robinsonii Ridl.—synonym of V. sumatrana (sect. Plagiostigma, subsect. Australasiaticae)
Viola robusta Hillebr.—(sect. Nosphinium, subsect. Nosphinium)
Viola roccabrunensis Espeut—(sect. Melanium, subsect. Bracteolatae)
Viola rockiana W. Becker—(sect. Chamaemelanium)
Viola rodriguezii W. Becker—(sect. Rosulatae)
Viola roigii Rossow—(sect. Rosulatae)
Viola rosacea Brainerd—(sect. Nosphinium, subsect. Borealiamericanae)
Viola rossii Hemsl.—(sect. Plagiostigma, subsect. Stolonosae)
Viola rossowiana J. M. Watson & A. R. Flores—(sect. Sempervivum)
Viola rosthornii E. Pritzel—synonym of V. moupinensis (sect. Plagiostigma, subsect. Stolonosae)
Viola rostrata Pursh—(sect. Viola, subsect. Rostratae)
Viola rosulata Poepp. & Endl.—(sect. Rosulatae)
Viola rotundifolia Michx.—(sect. Chamaemelanium)
Viola rotundifolia Michx. var. pallens Banks ex Ging.—probable synonym of V. palustris (sect. Plagiostigma, subsect. Stolonosae)
Viola rubella Cav.—(sect. Rubellium)
Viola rubella var. angustifolia Ging.—synonym of V. rubella (sect. Rubellium)
Viola rubella var. latifolia Ging.—synonym of V. rubella (sect. Rubellium)
Viola rubromarginata J. M. Watson & A. R. Flores—(sect. Rosulatae)
Viola rudolfii Vl. V. Nikitin—synonym of V. collina (sect. Viola, subsect. Viola)
Viola rudolphii Sparre—(sect. Chilenium)
Viola rugosa Phil. ex W. Becker—(sect. Rosulatae)
Viola rugulosa Greene—(sect. Chamaemelanium)
Viola rupestriformis Vl. V. Nikitin—hybrid (V. elatior × V. rupestris; sect. Viola, subsect. Rostratae)
Viola rupestris F. W. Schmidt—(sect. Viola, subsect. Rostratae)
Viola rupestris F. W. Schmidt subsp. rupestris—(sect. Viola, subsect. Rostratae)
Viola rupestris nothosubsp. glabrescens (Neum.) Vl. V. Nikitin—synonym of V. rupestris subsp. rupestris (sect. Viola, subsect. Rostratae)
Viola rupestris subsp. glaberrima (Murb.) Vl. V. Nikitin—synonym of V. rupestris subsp. rupestris (sect. Viola, subsect. Rostratae)
Viola rupestris subsp. licentii W. Becker—(sect. Viola, subsect. Rostratae)
Viola rupestris subsp. relicta Jalas—(sect. Viola, subsect. Rostratae)
Viola rupicola Elmer—(sect. Plagiostigma, subsect. Patellares)
Viola ruppii All.—synonym of V. canina (sect. Viola, subsect. Rostratae)
Viola ruprechtiana Borbás—hybrid (V. epipsila × V. palustris; sect. Plagiostigma, subsect. Stolonosae)
Viola ruralis Jord. ex Boreau—synonym of V. arvensis (sect. Melanium, subsect. Bracteolatae)
Viola russellii B. Boivin—synonym of V. vallicola var. vallicola (sect. Chamaemelanium)
Viola rydbergii Greene—synonym of V. canadensis (sect. Chamaemelanium)
Viola ryoniae House—hybrid (V. cucullata × V. subsinuata; sect. Nosphinium, subsect. Borealiamericanae)
Viola sabulosa (DC.) Boreau—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola saccata Melch.—(sect. Leptidium)
Viola sacchalinensis H. Boissieu—(sect. Viola, subsect. Rostratae)
Viola sacculus Skottsb.—(sect. Sempervivum)
Viola sagittata Aiton—(sect. Nosphinium, subsect. Borealiamericanae)
Viola sagittata var. emarginata Nutt.—synonym of V. emarginata (sect. Nosphinium, subsect. Borealiamericanae)
Viola sagittata var. hicksii Pollard—synonym of V. fimbriatula (sect. Nosphinium, subsect. Borealiamericanae)
Viola sagittata var. ovata (Nutt.) Torr. & A. Gray—synonym of V. fimbriatula (sect. Nosphinium, subsect. Borealiamericanae)
Viola sagittata var. subsagittata (Greene) Pollard—synonym of V. sagittata (sect. Nosphinium, subsect. Borealiamericanae)
Viola samothracica (Degen) Raus—(sect. Melanium, subsect. Bracteolatae)
Viola sandrasea Melch.—(sect. Viola, subsect. Viola)
Viola sandrasea subsp. cilicica Contandr. & Quézel—synonym of V. sandrasea (sect. Viola, subsect. Viola)
Viola santiagonensis W. Becker—(sect. Sempervivum)
Viola sarmentosa Burgersd., non M. Bieb.—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola sarmentosa Douglas, non M. Bieb.—synonym of V. sempervirens (sect. Chamaemelanium)
Viola sarmentosa var. orbiculata A. Gray—synonym of V. orbiculata (sect. Chamaemelanium)
Viola savatieri Makino—hybrid (V. albida (V. eizanensis) × V. tokubuchiana; sect. Plagiostigma, subsect. Patellares)
Viola savatieri var. detonsa Kitag.—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola saxatilis F. W. Schmidt—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola saxifraga Maire—(sect. Xylinosium)
Viola scabra F. Braun—hybrid (V. hirta × V. odorata; sect. Viola, subsect. Viola)
Viola scabrida Nakai—synonym of V. tokubuchiana (sect. Plagiostigma, subsect. Patellares)
Viola scandens Humb. & Bonpl. ex Schult.—(sect. Leptidium)
Viola scandens var. hirtella L. B. Sm. & A. Fernández—synonym of V. scandens var. scandens (sect. Leptidium)
Viola scandens var. integristipula Benoist—(sect. Leptidium)
Viola scandens Willd. ex Humb. & Bonpl. var. scandens—(sect. Leptidium)
Viola schachimardanica Khalk.—synonym of V. biflora (sect. Chamaemelanium)
Viola schaffneriana W. Becker—synonym of V. grahamii (sect. Nosphinium, subsect. Mexicanae)
Viola schariensis Erben—(sect. Melanium, subsect. Bracteolatae)
Viola schauloi Vl. V. Nikitin—hybrid (V. rupestris × V. sacchalinensis; sect. Viola, subsect. Rostratae)
Viola schensiensis W. Becker—probable syn. of V. striatella (sect. Plagiostigma, subsect. ?Stolonosae)
Viola schneideri W. Becker—synonym of V. davidii (sect. Plagiostigma, subsect. Stolonosae)
Viola schulzeana W. Becker—synonym of V. biflora (sect. Chamaemelanium)
Viola scopulorum (A. Gray) Greene—(sect. Chamaemelanium)
Viola scorpiuroides Coss.—(sect. Xylinosium)
Viola scrotiformis DC. ex Ging.—synonym of V. decumbens (sect. Melvio)
Viola seleriana W. Becker—synonym of V. grahamii (sect. Nosphinium, subsect. Mexicanae)
Viola selkirkii H. Boissieu & Capit., non Pursh—synonym of V. philippica (sect. Plagiostigma, subsect. Patellares)
Viola selkirkii Pursh ex Goldie—(sect. Plagiostigma, subsect. Patellares)
Viola selkirkii var. albiflora Nakai—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola selkirkii var. angustistipulata W. Becker p. p.—synonym of V. tokubuchiana (sect. Plagiostigma, subsect. Patellares)
Viola selkirkii var. brevicalcarata (W. Becker) W. Becker—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola selkirkii var. glabrescens W. Becker & Hultén—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola selkirkii var. subbarbata W. Becker—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola selkirkii var. variegata Nakai—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola semilunaris (Maxim.) W. Becker—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola sempervirens Greene—(sect. Chamaemelanium)
Viola sempervirens Greene subsp. sempervirens—(sect. Chamaemelanium)
Viola sempervirens subsp. orbiculoides M. S. Baker—(sect. Chamaemelanium)
Viola sempervirens var. orbiculata (A. Gray) J. K. Henry—synonym of V. orbiculata (sect. Chamaemelanium)
Viola sempervivum Gay—(sect. Sempervivum)
Viola senzanensis Hayata—(sect. Plagiostigma, subsect. Patellares)
Viola seoulensis Nakai—(sect. Plagiostigma, subsect. Patellares)
Viola septemloba Leconte—(sect. Nosphinium, subsect. Borealiamericanae)
Viola septemloba subsp. egglestonii (Brainerd) L. E. McKinney—synonym of V. egglestonii (sect. Nosphinium, subsect. Borealiamericanae)
Viola septentrionalis Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola sequeirae Capelo, R. Jardim, J. C. Costa, Lousã & Rivas Mart.—synonym of V. riviniana (sect. Viola, subsect. Rostratae)
Viola sequoiensis Kellogg—synonym of V. lobata subsp. lobata (sect. Chamaemelanium)
Viola sergievskiae Tzvelev—synonym of V. rupestris (sect. Viola, subsect. Rostratae)
Viola sermenika Formánek—hybrid (V. aetolica × V. tricolor (“V. macedonica”); sect. Melanium, subsect. Bracteolatae)
Viola serpens subsp. gurhwalensis W. Becker—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola serpens var. confusa (Benth.) J. D. Hooker & Thomson—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola serpens var. pseudoscotophylla H. Boissieu—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola serpens Wallich ex Ging.—synonym of V. pilosa (sect. Viola, subsect. Viola)
Viola serpentinicola de Salas—(sect. Erpetion)
Viola serresiana Erben—(sect. Melanium, subsect. Bracteolatae)
Viola serrula W. Becker—(sect. Viola, subsect. Rostratae)
Viola sfikasiana Erben—(sect. Melanium, subsect. Bracteolatae)
Viola shaoyoukengensis S. S. Ying—synonym of V. nagasawae (sect. Plagiostigma, subsect. Diffusae)
Viola sheltonii Torr.—(sect. Chamaemelanium)
Viola sheltonii var. biternata (Greene) A. Nelson—synonym of V. sheltonii (sect. Chamaemelanium)
Viola shikokiana Makino—(sect. Plagiostigma, subsect. Stolonosae)
Viola shinchikuensis Yamam.—(sect. Viola, subsect. Rostratae)
Viola shiweii Xiao Chen Li & Z. W. Wang—(sect. Plagiostigma, subsect. Australasiaticae)
Viola sieberiana Spreng.—(sect. Erpetion)
Viola sieboldiana (Maxim.) Makino—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola sieboldiana var. chaerophylloides (Regel) Nakai—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola sieboldii Maxim.—(sect. Plagiostigma, subsect. Patellares)
Viola sieheana W. Becker—(sect. Viola, subsect. Rostratae)
Viola sikkimensis var. acuminatifolia W. Becker—synonym of V. sumatrana (sect. Plagiostigma, subsect. Australasiaticae)
Viola sikkimensis var. debilis W. Becker—synonym of V. kwangtungensis (sect. Plagiostigma, subsect. Australasiaticae)
Viola sikkimensis W. Becker—(sect. Plagiostigma, subsect. Australasiaticae)
Viola silicestris K. R. Thiele & Prober—(sect. Erpetion)
Viola silvestriformis W. Becker—synonym of V. kusanoana (sect. Viola, subsect. Rostratae)
Viola simulata M. S. Baker—synonym of V. langsdorffii (sect. Nosphinium, subsect. Langsdorffianae)
Viola singularis J. M. Watson & A. R. Flores—(sect. Rosulatae)
Viola sintenisii W. Becker—(sect. Viola, subsect. Viola)
Viola sirinica Ricceri & Moraldo—synonym of V. aethnensis subsp. splendida (sect. Melanium, subsect. Bracteolatae)
Viola skofitziana Wiesb.—hybrid (V. elatior × V. pumila; sect. Viola, subsect. Rostratae)
Viola skottsbergiana W. Becker—(sect. Sempervivum)
Viola slavikii Formánek—(sect. Melanium, subsect. Bracteolatae)
Viola smithiana W. Becker—synonym of V. davidii (sect. Plagiostigma, subsect. Stolonosae)
Viola somalensis Engl.—(sect. Sclerosium)
Viola somchetica K. Koch—(sect. Plagiostigma, subsect. Patellares)
Viola sororia subsp. affinis (Leconte) R. J. Little—synonym of V. affinis (sect. Nosphinium, subsect. Borealiamericanae)
Viola sororia var. affinis (Leconte) L. E. McKinney—synonym of V. affinis (sect. Nosphinium, subsect. Borealiamericanae)
Viola sororia var. missouriensis (Greene) L. E. McKinney—synonym of V. missouriensis (sect. Nosphinium, subsect. Borealiamericanae)
Viola sororia var. novae-angliae (House) L. E. McKinney—synonym of V. novae-angliae (sect. Nosphinium, subsect. Borealiamericanae)
Viola sororia Willd.—(sect. Nosphinium, subsect. Borealiamericanae)
Viola spathulata Willd. ex Schult.—(sect. Spathulidium)
Viola speciosa Schrad. ex Rchb.—synonym of V. elegantula (sect. Melanium, subsect. Bracteolatae)
Viola spegazzinii W. Becker—(sect. Rosulatae)
Viola sphaerocarpa W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola splendida W. Becker—synonym of V. aethnensis subsp. splendida (sect. Melanium, subsect. Bracteolatae)
Viola squamulosa W. Becker—synonym of V. sacculus (sect. Sempervivum)
Viola stagnina Kit. ex Schult.—(sect. Viola, subsect. Rostratae)
Viola steinbachii W. Becker—(sect. Leptidium)
Viola stellata Miers—synonym of V. pusilla (sect. Subandinium)
Viola stenocentra Hayata ex Nakai—synonym of V. philippica subsp. malesica (sect. Plagiostigma, subsect. Patellares)
Viola stewardiana W. Becker—(sect. Viola, subsect. Rostratae)
Viola stipularis Sw.—(sect. Leptidium)
Viola stocksii Boiss.—(sect. Sclerosium)
Viola stojanowii W. Becker—(sect. Melanium, subsect. Bracteolatae)
Viola stolonifera J. J. Rodr.—synonym of V. odorata (sect. Viola, subsect. Viola)
Viola stoloniflora Yokota & Higa—(sect. Plagiostigma, subsect. Formosanae)
Viola stoneana House—(sect. Nosphinium, subsect. Borealiamericanae)
Viola striata Aiton—(sect. Viola, subsect. Rostratae)
Viola striatella H. Boissieu—(sect. Plagiostigma, subsect. Stolonosae)
Viola striis-notata (J. Wagner) Merxm. & W. Lippert—(sect. Melanium, subsect. Bracteolatae)
Viola stuebelii Hieron.—(sect. Chilenium)
Viola suaviflora Borbás & Heinr. Braun—hybrid (V. collina × V. suavis; sect. Viola, subsect. Viola)
Viola suavis M. Bieb.—(sect. Viola, subsect. Viola)
Viola suavis subsp. adriatica (Freyn) Haesler—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola suavis subsp. austrodalmatica Mereďa & Hodálová—synonym of V. suavis (sect. Viola, subsect. Viola)
Viola subaequiloba (Franch. & Sav.) Nakai—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola subaffinis House—hybrid (V. affinis × V. nephrophylla), synonym of V. venustula (sect. Nosphinium, subsect. Borealiamericanae)
Viola subandina J. M. Watson—(sect. Subandinium)
Viola subasica (Fiori) Ricceri & Moraldo—synonym of V. eugeniae (sect. Melanium, subsect. Bracteolatae)
Viola subatlantica (Maire) Ibn Tattou—(sect. Melanium, subsect. Bracteolatae)
Viola subdelavayi S. H. Huang—synonym of V. urophylla (sect. Chamaemelanium)
Viola subdimidiata A. St.-Hil.—(sect. Leptidium)
Viola subglabra (Ledeb.) Baikov ex A. V. Grebenjuk & Chepinoga—synonym of V. mirabilis (sect. Viola, subsect. Rostratae)
Viola subjuncta Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola sublanceolata House—hybrid (V. lanceolata × V. minuscula; sect. Nosphinium, subsect. Borealiamericanae)
Viola subsagittata Greene—hybrid (V. fimbriatula × V. sagittata; sect. Nosphinium, subsect. Borealiamericanae)
Viola subsagittifolia Suksd.—synonym of V. vallicola var. vallicola (sect. Chamaemelanium)
Viola subsinuata (Greene) Greene—(sect. Nosphinium, subsect. Borealiamericanae)
Viola subviscosa Greene—synonym of V. septentrionalis (sect. Nosphinium, subsect. Borealiamericanae)
Viola suecica Fr.—(sect. Plagiostigma, subsect. Stolonosae)
Viola suecica Fr. subsp. suecica—(sect. Plagiostigma, subsect. Stolonosae)
Viola suecica subsp. repens W. Becker—(sect. Plagiostigma, subsect. Stolonosae)
Viola sukaczewii Vl. V. Nikitin—hybrid (V. canina × V. mirabilis; sect. Viola, subsect. Rostratae)
Viola sumatrana Miq.—(sect. Plagiostigma, subsect. Australasiaticae)
Viola superba M. S. Baker—synonym of V. langsdorffii (sect. Nosphinium, subsect. Langsdorffianae)
Viola sylvestris var. candida (H. Boissieu) H. Lév.—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola sylvestris var. grypoceras (A. Gray) Maxim.—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola sylvestris var. puberula E. Sheld.—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola szetschwanensis var. kangdienensis Chang—synonym of V. szetschwanensis (sect. Chamaemelanium)
Viola szetschwanensis var. nudicaulis W. Becker—synonym of V. szetschwanensis (sect. Chamaemelanium)
Viola szetschwanensis W. Becker & H. Boissieu—(sect. Chamaemelanium)
Viola taischanensis Ching J. Wang—synonym of V. prionantha (sect. Plagiostigma, subsect. Patellares)
Viola taiwanensis W. Becker—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola taiwaniana Nakai—synonym of V. philippica subsp. malesica (sect. Plagiostigma, subsect. Patellares)
Viola takahashii (Nakai) Taken.—synonym of V. albida (sect. Plagiostigma, subsect. Patellares)
Viola takasagoensis Koidz.—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola takedana Makino—synonym of V. tokubuchiana (sect. Plagiostigma, subsect. Patellares)
Viola takesimana Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola talmensis Vl. V. Nikitin—hybrid (V. rupestris × V. stagnina (“V. persicifolia”); sect. Viola, subsect. Rostratae)
Viola taltalensis var. glaberrima W. Becker—synonym of V. taltalensis (sect. Subandinium)
Viola taltalensis W. Becker—(sect. Subandinium)
Viola tanaitica Grosset—(sect. Viola, subsect. Rostratae)
Viola tarbagataica Klokov—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tashiroi Makino—(sect. Plagiostigma, subsect. Patellares)
Viola tatrae Borbás—hybrid (V. tricolor (subsp. saxatilis) × V. lutea (subsp. sudetica); sect. Melanium, subsect. Bracteolatae)
Viola tayemonii Hayata—synonym of V. biflora (sect. Chamaemelanium)
Viola taynensis Elisafenko—synonym of V. odorata (sect. Viola, subsect. Viola)
Viola tectiflora W. Becker—(sect. Rosulatae)
Viola tenuicornis subsp. ircutiana (Turcz.) Espeut—(sect. Plagiostigma, subsect. Patellares)
Viola tenuicornis subsp. primorskajensis W. Becker—synonym of V. variegata subsp. primorskajensis (sect. Plagiostigma, subsect. Patellares)
Viola tenuicornis subsp. tenuicornis—(sect. Plagiostigma, subsect. Patellares)
Viola tenuicornis subsp. trichosepala W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola tenuicornis var. brachytricha W. Becker—synonym of V. tenuicornis subsp. tenuicornis (sect. Plagiostigma, subsect. Patellares)
Viola tenuicornis W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola tenuipes Pollard—(sect. Chamaemelanium)
Viola tenuis Benth.—(sect. Plagiostigma, subsect. Diffusae)
Viola tenuis var. geralensis W. Becker—synonym of V. uleana (sect. Leptidium)
Viola tenuis W. Becker—synonym of V. uleana (sect. Leptidium)
Viola tenuissima C. C. Chang—(sect. Chamaemelanium)
Viola teplouchovii Juz.—synonym of V. mauritii (sect. Viola, subsect. Rostratae)
Viola teshioensis Miyabe & Tatew.—synonym of V. collina (sect. Viola, subsect. Viola)
Viola thasia W. Becker—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola thianschanica Maxim.—synonym of V. kunawurensis (sect. Himalayum)
Viola thibaudieri Franch. & Sav.—(sect. Viola, subsect. Rostratae)
Viola thomasiana Songeon & E. P. Perrier—(sect. Viola, subsect. Viola)
Viola thomsonii Oudem.—(sect. Plagiostigma, subsect. Stolonosae)
Viola thrichopoda Hayata—probable synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola thymifolia Britton—(sect. Leptidium)
Viola tichomirovii Vl. V. Nikitin—hybrid (V. canina × V. elatior; sect. Viola, subsect. Rostratae)
Viola tienschiensis W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola tigirekica Vl. V. Nikitin—hybrid (V. altaica × V. tricolor; sect. Melanium, subsect. Bracteolatae)
Viola tineorum Erben & Raimondo—(sect. Melanium, subsect. Bracteolatae)
Viola tokaiensis Sugim., nom. nud.—(sect. Plagiostigma, subsect. Patellares)
Viola tokubuchiana Makino—(sect. Plagiostigma, subsect. Patellares)
Viola tomentosa M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola tomentosifolia Makino ex U. Ohga—synonym of V. collina (sect. Viola, subsect. Viola)
Viola toppingii Elmer—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola toroensis Martic.—synonym of V. philippiana (sect. Rosulatae)
Viola torslundensis W. Becker—hybrid (V. elatior × V. stagnina; sect. Viola, subsect. Viola)
Viola tosaensis Nakai—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola tovarii P. Gonzáles & Molina-Alor—(sect. Rosulatae)
Viola tozanensis Hayata—synonym of V. formosana (sect. Plagiostigma, subsect. Formosanae)
Viola tracheliifolia Ging.—(sect. Nosphinium, subsect. Nosphinium)
Viola triangulifolia W. Becker—(sect. Plagiostigma, subsect. Bilobatae)
Viola trichopetala C. C. Chang—(sect. Plagiostigma, subsect. Patellares)
Viola trichosepala (W. Becker) Juz.—synonym of V. tenuicornis subsp. trichosepala (sect. Plagiostigma, subsect. Patellares)
Viola tricolor L.—(sect. Melanium, subsect. Bracteolatae)
Viola tricolor L. subsp. tricolor—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor subsp. alpestris (Ging.) Ces.—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor subsp. ammotropha Wittr.—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor subsp. curtisii (V. Forster) Syme—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor subsp. macedonica (Boiss. & Heldr.) A. Schmidt—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor subsp. matutina (Klokov) Valentine—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor subsp. polychroma (A. Kern.) Nyman—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor subsp. subalpina Gaudin—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tricolor var. arvensis (Murray) DC.—synonym of V. arvensis (sect. Melanium, subsect. Bracteolatae)
Viola tricolor var. hortensis DC.—probable synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola tridentata Sm.—(sect. Tridens)
Viola triflabellata W. Becker—(sect. Triflabellium)
Viola triloba Schwein.—synonym of V. palmata var. triloba (sect. Nosphinium, subsect. Borealiamericanae)
Viola triloba var. dilatata (Elliott) Brainerd—synonym of V. palmata var. palmata (sect. Nosphinium, subsect. Borealiamericanae)
Viola trinervata (Howell) Howell ex A. Gray—(sect. Chamaemelanium)
Viola trinervis Korth.—synonym of V. inconspicua (sect. Plagiostigma, subsect. Patellares)
Viola tripartita Elliott—(sect. Chamaemelanium)
Viola trochlearis J. M. Watson & A. R. Flores—(sect. Rosulatae)
Viola truncata Meyen—(sect. Grandiflos)
Viola truncata var. glaberrima W. Becker—synonym of V. truncata (sect. Grandiflos)
Viola truncata var. glandulifera W. Becker—synonym of V. cheeseana (sect. Grandiflos)
Viola truncata W. Becker, non Meyen—synonym of V. boliviana (sect. Leptidium)
Viola tsugitakaensis Masamune—probable synonym of V. fargesii (sect. Plagiostigma, subsect. Stolonosae)
Viola tuberifera Franch.—(sect. Plagiostigma, subsect. Bulbosae)
Viola tuberifera var. brevipedicellata S. Y. Chen—synonym of V. tuberifera (sect. Plagiostigma, subsect. Bulbosae)
Viola tuberifera var. pseudopalustris H. Lév.—synonym of V. tuberifera (sect. Plagiostigma, subsect. Bulbosae)
Viola tucumanensis W. Becker—(sect. Triflabellium)
Viola turczaninowii Juz.—synonym of V. acuminata subsp. acuminata (sect. Viola, subsect. Rostratae)
Viola turkestanica Regel & Schmalh.—(sect. Plagiostigma, subsect. Patellares)
Viola turritella J. M. Watson & A. R. Flores—(sect. Sempervivum)
Viola tuvinica Vl. V. Nikitin—hybrid (V. sacchalinensis (V. komarovii) × V. mauritii; sect. Viola, subsect. Rostratae)
Viola tzvelevii Vl. V. Nikitin—hybrid (V. pumila × V. riviniana; sect. Viola, subsect. Rostratae)
Viola ucriana Erben & Raimondo—(sect. Melanium, subsect. Bracteolatae)
Viola uechtritziana Borbás—hybrid (V. mirabilis × V. reichenbachiana; sect. Viola)
Viola uleana W. Becker—(sect. Leptidium)
Viola uliginosa Besser—(sect. Viola, subsect. Rostratae)
Viola ulleungdoensis M. Kim & J. Lee—(sect. Plagiostigma, subsect. Patellares)
Viola umbraticola Kunth—(sect. Viola, subsect. Rostratae)
Viola umbraticola var. glaberrima W. Becker—synonym of V. umbraticola (sect. Viola, subsect. Rostratae)
Viola umbrosa (Wahlb.) Fr.—synonym of V. selkirkii (sect. Plagiostigma, subsect. Patellares)
Viola umemurae Makino—synonym of V. variegata subsp. primorskajensis (sect. Plagiostigma, subsect. Patellares)
Viola umphangensis S. Nansai, Srisanga & Suwanph.—(sect. Plagiostigma, subsect. Patellares)
Viola uncinulata Greene—synonym of V. adunca subsp. adunca (sect. Viola, subsect. Rostratae)
Viola unica J. M. Watson & A. R. Flores, nom. inval.—synonym of V. uniquissima (sect. Triflabellium)
Viola uniflora L.—(sect. Chamaemelanium)
Viola uniflora subsp. lasczinskyi Zuev—synonym of V. uniflora (sect. Chamaemelanium)
Viola uniflora var. orientalis Maxim.—synonym of V. orientalis subsp. orientalis (sect. Chamaemelanium)
Viola uniquissima J. M. Watson & A. R. Flores—(sect. Triflabellium)
Viola unwinii W. Becker—synonym of V. hossei (sect. Plagiostigma, subsect. Stolonosae)
Viola urophylla Franch.—(sect. Chamaemelanium)
Viola urophylla var. densivillosa C. J. Wang—synonym of V. urophylla (sect. Chamaemelanium)
Viola ursina Kom.—synonym of V. langsdorffii (sect. Nosphinium, subsect. Langsdorffianae)
Viola utahensis M. S. Baker & J. C. Clausen—(sect. Chamaemelanium)
Viola utchinensis Koidz.—(sect. Viola, subsect. Rostratae)
Viola vadimii Vl. V. Nikitin—synonym of V. elatior (sect. Viola, subsect. Rostratae)
Viola vaginata Maxim.—(sect. Plagiostigma, subsect. Stolonosae)
Viola vaginata subsp. alata W. Becker—synonym of V. moupinensis (sect. Plagiostigma, subsect. Stolonosae)
Viola vaginata var. sutchuensis Franch. ex H. Boissieu—synonym of V. moupinensis (sect. Plagiostigma, subsect. Stolonosae)
Viola vagula Greene—synonym of V. nephrophylla (sect. Nosphinium, subsect. Borealiamericanae)
Viola valderia All.—(sect. Melanium, subsect. Bracteolatae)
Viola valdiviana Kalela—synonym of V. maculata var. maculata (sect. Chilenium)
Viola vallenarensis W. Becker—(sect. Subandinium)
Viola vallicola A. Nelson—(sect. Chamaemelanium)
Viola vallicola var. major (Hook.) Fabijan—(sect. Chamaemelanium)
Viola vallicola var. vallicola—(sect. Chamaemelanium)
Viola vanroyenii H. St. John—synonym of V. kauaensis (sect. Nosphinium, subsect. Nosphinium)
Viola variegata Fisch. ex Link—(sect. Plagiostigma, subsect. Patellares)
Viola variegata Fisch. ex Link subsp. variegata—(sect. Plagiostigma, subsect. Patellares)
Viola variegata subsp. chinensis (Bunge ex Regel) W. Becker—synonym of V. tenuicornis subsp. tenuicornis (sect. Plagiostigma, subsect. Patellares)
Viola variegata subsp. primorskajensis (W. Becker) Espeut—(sect. Plagiostigma, subsect. Patellares)
Viola variegata var. chinensis Bunge ex Regel—synonym of V. tenuicornis subsp. tenuicornis (sect. Plagiostigma, subsect. Patellares)
Viola variegata var. nipponica Makino—synonym of V. variegata subsp. primorskajensis (sect. Plagiostigma, subsect. Patellares)
Viola variegata var. viridis Kitag.—synonym of V. variegata (sect. Plagiostigma, subsect. Patellares)
Viola vectoris Ricceri & Moraldo—synonym of V. eugeniae (sect. Melanium, subsect. Bracteolatae)
Viola velutina Formánek—(sect. Melanium, subsect. Bracteolatae)
Viola venusta Nakai—synonym of V. sacchalinensis (sect. Viola, subsect. Rostratae)
Viola venustula Greene—hybrid (V. affinis × V. nephrophylla; sect. Nosphinium, subsect. Borealiamericanae)
Viola verecunda A. Gray—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola vermontana House—hybrid (V. latiuscula × V. sororia; sect. Nosphinium, subsect. Borealiamericanae)
Viola veronicifolia Planch. & Linden—(sect. Leptidium)
Viola vespertina Klokov—synonym of V. tricolor (sect. Melanium, subsect. Bracteolatae)
Viola viarum Pollard—(sect. Nosphinium, subsect. Borealiamericanae)
Viola viatkensis Vl. V. Nikitin—hybrid (V. canina × V. selkirkii)
Viola vilaensis Hayek—(sect. Viola, subsect. Viola)
Viola villaquensis Benz—hybrid (V. canina (“V. montana”) × V. rupestris (var. arenaria); sect. Viola, subsect. Rostratae)
Viola villosa Walter—(sect. Nosphinium, subsect. Borealiamericanae)
Viola vilnaensis W. Becker—hybrid (V. rupestris × V. stagnina; sect. Viola, subsect. Rostratae)
Viola vindobonensis Wiesb.—hybrid (V. odorata × V. suavis; sect. Viola, subsect. Viola)
Viola violacea Makino—(sect. Plagiostigma, subsect. Patellares)
Viola vittata Greene—(sect. Plagiostigma, subsect. Stolonosae)
Viola volcanica Gillies ex Hook. & Arn.—(sect. Rosulatae)
Viola volcanica var. exilis (Phil.) Reiche—synonym of V. exilis (sect. Rosulatae)
Viola volcanica var. truncata (Meyen) Reiche—synonym of V. truncata (sect. Grandiflos)
Viola voliotisii Erben—(sect. Melanium, subsect. Bracteolatae)
Viola vorobievii Bezd.—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola vourinensis Erben—(sect. Melanium, subsect. Bracteolatae)
Viola vulturis Ricceri & Moraldo—synonym of V. aethnensis subsp. splendida (sect. Melanium, subsect. Bracteolatae)
Viola wailenalenae (Rock) Skottsb.—(sect. Nosphinium, subsect. Nosphinium)
Viola wallichiana Ging.—(sect. Chamaemelanium)
Viola wallichiana subsp. brevicornis W. Becker—synonym of V. biflora (sect. Chamaemelanium)
Viola walteri House—(sect. Viola, subsect. Rostratae)
Viola wansanensis Y. N. Lee—hybrid (V. albida (V. chaerophylloides) × V. mandshurica; sect. Plagiostigma, subsect. Patellares)
Viola weberbaueri W. Becker—(sect. Subandinium)
Viola websteri Hemsl.—(sect. Viola, subsect. Rostratae)
Viola weddellii W. Becker—synonym of V. thymifolia (sect. Leptidium)
Viola weibelii J. F. Macbr.—(sect. Inconspicuiflos)
Viola weixiensis C. J. Wang—synonym of V. pendulicarpa (sect. Viola, subsect. Rostratae)
Viola werdermannii f. glandulifera W. Becker—synonym of V. polypoda (sect. Subandinium)
Viola werdermannii var. glaberrima W. Becker—synonym of V. polypoda (sect. Subandinium)
Viola werdermannii var. typica W. Becker—synonym of V. polypoda (sect. Subandinium)
Viola werdermannii W. Becker—synonym of V. polypoda (sect. Subandinium)
Viola wettsteinii Richt.—synonym of V. reichenbachiana (sect. Viola, subsect. Rostratae)
Viola wichurae Nakai—synonym of V. grypoceras (sect. Viola, subsect. Rostratae)
Viola wikipedia J. M. Watson & A. R. Flores—nom. illeg. ; synonym of V. angustifolia (sect. Grandiflos)
Viola wilczekiana Beauverd—hybrid (V. hirta × V. rupestris; sect. Viola)
Viola wilhelmii Vl. V. Nikitin—hybrid (V. oreades × V. tricolor (subsp. saxatilis); sect. Melanium, subsect. Bracteolatae)
Viola wilibaldii Vl. V. Nikitin—hybrid (V. pumila × V. reichenbachiana; sect. Viola, subsect. Rostratae)
Viola williamsii Wittr.—hybrid (garden cultivar; V. wittrockiana × V. cornuta; sect. Melanium, subsect. Bracteolatae)
Viola willkommii R. Roem. ex Willk.—(sect. Viola, subsect. Rostratae)
Viola wilmattiae Pollard & Cockerell—hybrid (V. nephrophylla × V. pedatifida; sect. Nosphinium, subsect. Borealiamericanae)
Viola wilsonii W. Becker—(sect. Plagiostigma, subsect. Diffusae)
Viola wittrockiana Gams ex Nauenb. & Buttler—hybrid (garden cultivar involving at least V. altaica, V. lutea, and V. tricolor; sect. Melanium, subsect. Bracteolatae)
Viola woosanensis Y. N. Lee & J. Kim—hybrid (V. albida (V. chaerophylloides) × V. ulleungdoensis; sect. Plagiostigma, subsect. Patellares)
Viola woroschilovii Bezd.—synonym of V. prionantha (sect. Plagiostigma)
Viola wujekii H. E. Ballard—hybrid (V. appalachensis × V. striata; sect. Viola, subsect. Rostratae)
Viola wulingensis S. S. Ying—synonym of V. senzanensis (sect. Plagiostigma, subsect. Patellares)
Viola xanthopetala Nakai—synonym of V. orientalis subsp. xanthopetala (sect. Chamaemelanium)
Viola xanthopotamica J. M. Watson & A. R. Flores—(sect. Rosulatae)
Viola yakusimana Nakai—synonym of V. hamiltoniana (sect. Plagiostigma, subsect. Bilobatae)
Viola yamatsutae Ishidoya ex Kitag.—synonym of V. mongolica (sect. Plagiostigma, subsect. Patellares)
Viola yazawana Makino—(sect. Plagiostigma, subsect. Stolonosae)
Viola yedoensis f. candida Kitag.—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola yedoensis f. intermedia Kitag.—synonym of V. mandshurica (sect. Plagiostigma, subsect. Patellares)
Viola yedoensis Makino—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola yedoensis var. pseudojaponica (Nakai) T. Hashimoto ex E. Hama & K. Nakai—synonym of V. philippica subsp. philippica (sect. Plagiostigma, subsect. Patellares)
Viola yezoensis Maxim.—(sect. Plagiostigma, subsect. Patellares)
Viola yezoensis var. hebeiensis (J. W. Wang & T. G. Ma) J. W. Wang & J. Yang [“hopeiensis”]—synonym of V. mongolica (sect. Plagiostigma, subsect. Patellares)
Viola yildirimlii Dinç & Bagci—(sect. Viola, subsect. Viola)
Viola yubariana Nakai—synonym of V. brevistipulata (sect. Chamaemelanium)
Viola yunnanensis W. Becker & H. Boissieu—(sect. Plagiostigma, subsect. Diffusae)
Viola yunnanfuensis W. Becker—(sect. Plagiostigma, subsect. Patellares)
Viola yurii Vl. V. Nikitin—hybrid (V. collina × V. riviniana; sect. Viola)
Viola yuzufeliensis A. P. Khokhr.—(sect. Plagiostigma, subsect. Patellares)
Viola zongia Tul.—synonym of V. abyssinica (sect. Abyssinium)
Viola zophodes K. R. Thiele & Prober—hybrid (V. eminens × V. fuscoviolacea; sect. Erpetion)
Viola zwienenii J. M. Watson & A. R. Flores—hybrid (V. atropurpurea × V. beckeriana; sect. Sempervivum)
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