About the district: East Siang district is an important administrative district of Arunachal Pradesh and is a part of the erstwhile Siang frontier division. It was also known as the Abor Hills during the British era. It is a mountainous area with river plains as well as rocky slopes and has a total area of 3603 sq. km., lying approximately between 27º43′ and 28º15′ North latitudes and 94º42′ and 95º35′ East latitudes (Fig. 1). Griffith (1836), carried out the first floristic work in the Abor and Mishmi Hills, and published “Flora of Mishmi Hills”. With the advent of the 20^th century, many more plant explorations were carried out resulting in significant publications such as “On the botany of Abor Expedition” by Burkill (1924); “Botanical exploration in the Mishmi Hill” by Ward (1929), “Observation of the Flora of Siang Frontier Division” by Rao & Joseph (1965), “Floristic diversity assessment and vegetation analysis of Upper Siang District of Eastern Himalaya” by Choudhary et al. (2008a, b; 2012) etc. Moreover, several studies on the taxonomy and ethnobotany of the plants of the region were also published (Tag et al. 2008; Singh et al. 2011; Yumnam et al. 2011; Yumnam & Tripathi 2013; Baruah et al. 2013; Boko & Narsimhan 2014; Mibang & Das 2017; Jeyaprakash et al. 2017c) which documented more than 300 ethnobotanically useful plant species present in the Siang belt [Now the list has been extended to include a total of 000 plants used by the whole Adi community]. Although the general floristic account of the region was documented in several scattered publications, a comprehensive checklist for this important area highlighting the endemic and native species was not available. The recent discovery and documentation of several new species and new records (Jeyaprakash et al. 2014; Gogoi & Borah 2015; Tatum & Das 2016; Jeyaprakash & Rathinavel 2017a, b; Jeyaprakash et al. 2017a, b; Nangkar et al. 2017; Borah & Das 2018; Borah et al. 2018, 2020a, b; Taram & Borah 2020; Taram et al. 2020a, b, c, d, e) from the East Siang District and other districts of Arunachal Pradesh and its neighbouring regions, highlights the rich biodiversity of the area and warrants more exploration and research. The present study is, therefore, aimed to provide an updated checklist of the native vascular plants of East Siang district. It will also provide information on the endemic and Red list plant species (IUCN 2020) distributed in the area, based on the field surveys and scrutiny of herbarium collections and published literature.

Abstract: The present study is an outcome of the floristic surveys of East Siang district of Arunachal Pradesh, carried out during 2017-2019 as well as a compilation of earlier published reports. Vegetation analysis of this area [1.Tropical forest: Grasslands, Tropical semi evergreen forest , Tropical evergreen forest, Tropical wet evergreen forest 2. Subtropical forest] along with a checklist of 508 taxa has been presented. A total of 503 species, one subspecies and four varieties of native vascular plants belonging to 348 genera and 102 families are reported. Among these, 10 taxa are endemic to India, two critically endangered, one vulnerable, one near threatened, two data deficient and others are either least concern or not evaluated. The study documents Mycetia mukerjiana and Citrus indica for the flora of Arunachal Pradesh, and additional localities of five lesser-known endemic species. The most dominant families were found to be Poaceae (27 species), followed by Lamiaceae (23 species), Gesneriaceae (22 species), and Rubiaceae (20 species). The number of new taxa described from the region, endemism, and the Red listed plants strongly reflect the floristic importance of the region which are in the dire need of conservation.

Acanthaceae

Codonacanthus pauciflorus (Nees) Nees

Dicliptera babui Karthik. & Moorthy

Justicia adhatoda L.

Mackaya neesiana (Wall.) Das

Phlogacanthus curviflorus (Nees) Nees

Phlogacanthus gracilis P.Anderson ex Burkill

Phlogacanthus thyrsiformis (Roxb. ex Hardw.) Mabb.

Phlogacanthus vitellinus (Roxb.) T.Anderson

Pseuderanthemum leptanthus (C.B.Clarke) Lindau

Rhinacanthus calcaratus (Wall.) Nees

Rungia pectinata (L.) Nees

Strobilanthes hamiltoniana (Steud.) Bosser & Heine

Strobilanthes mastersii T.Anderson

Strobilanthes oxycalycina J.R.I.Wood

Strobilanthes pauciflora (Merr.) Y.F.Deng

Strobilanthes secunda T.Anderson

Strobilanthes tubiflos (C.B.Clarke) J.R.I.Wood

Thunbergia coccinea Wall. ex D.Don

Thunbergia grandiflora (Roxb. ex Rottler) Roxb.

Achariaceae

Gynocardia odorata R.Br.

Acoraceae

Acorus calamus L.

Actinidaceae

Saurauia armata Kurz

Saurauia sinohirsuta J.Q.Li & Soejarto

Saurauia napaulensis DC.

Saurauia punduana Wall.

Altingiaceae

Liquidambar excelsa (Noronha) Oken

Amaranthaceae

Achyranthes aspera L.

Achyranthes bidentata Blume

Alternanthera sessilis (L.) R.Br. ex DC.

Amaranthus viridis L.

Chenopodium album L.

Chenopodium giganteum D.Don.

Cyathula prostrata (L.) Blume

Deeringia amaranthoides (Lam.) Merr.

Amaryllidaceae

Allium hookeri Thwaites

Anacardiaceae

Mangifera sylvatica Roxb.

Rhus chinensis Mill.

Spondias pinnata (L.f) Kurz.

Choerospondias axillaris (Roxb.) B.L.Burtt & A.W.Hill

Toxicodendron hookeri (Sahni & Bahadur) C.Y.Wu & T.L.Ming

Annonaceae

Fissistigma bicolor (Roxb.) Merr.

Fissistigma polyanthum (Hook.f and Thomson) Merr.

Miliusa dioeca (Roxb.) Chaowasku & Kessler

Polyalthia suberosa (Roxb.) Thwaites

Trivalvaria costata (Hook.f. & Thomson) I.M.Turner

Apiaceae

Centella asiatica (L.) Urb

Oenanthe javanica (Blume) DC.

Apocynaceae

Aganosma cymosa (Roxb.) G.Don

Alstonia scholaris (L.) R.Br.

Beaumontia grandiflora Wall.

Dischidia bengalensis Colebr.

Hemidesmus indicus (L.) R.Br.

Hoya arnottiana Wight

Hoya verticillata (Vahl) G.Don

Rauvolfia verticillata (Lour.) Baill.

Tabernaemontana divaricata (L.) R.Br. ex Roem. & Schult.

Wrightia coccinea (Roxb. ex Hornem.) Sims

Araceae

Alocasia fornicata (Kunth) Schott

Amorphophallus bulbifer (Roxb.) Blume

Amorphophallus napalensis (Wall.) Bogner & Mayo

Arisaema arunachalensis A.Nangkar, A.P. Das & H.Tag

Colocasia fallax Schott

Homalomena aromatica (Spreng.) Schott

Pothos scandens L.

Pothos chinensis (Raf.) Merr.

Rhaphidophora decursiva (Roxb.) Schott

Rhaphidophora glauca (Wall.) Schott

Rhaphidophora hookeri Schott

Steudnera assamica Hook.f.

Araliaceae

Aralia armata (Wall ex. Don) Seem.

Brassaiopsis glomerulata (Blume) Regel

Eleutherococcus trifoliatus (L.) S.Y.Hu

Heteropanax fragrans (Roxb.) Seem.

Hydrocotyle himalaica P.K.Mukh.

Hydrocotyle sibthorpioides Lam.

Hydrocotyle javanica Thunb.

Schefflera bengalensis Gamble

Trevesia palmata (Roxb. ex Lindl.) Vis.

Arecaceae

Calamus erectus Roxb.

Calamus flagellum Griff. Ex Walp

Caryota urens L.

Phoenix rupicola T.Anderson

Pinanga gracilis Blume

Wallichia oblongifolia Griff.

Wallichia triandra (J.Joseph) S.K.Basu

Aristolochiaceae

Aristolochia platanifolia (Klotzsch) Duch

Asparagaceae

Dracaena angustifolia (Medik.) Roxb.

Dracaena petiolata Hook.f.

Peliosanthes ligniradicis N.Tanaka, Taram & D. Borah

Peliosanthes macrophylla Wall. ex Baker

Tupistra stoliczana Kurz

Asteraceae

Artemisia indica Willd

Blumea balsamifera (L.) DC.

Gnaphalium polycaulon Pers.

Grangea maderaspatana (L.) Poir.

Gynura cusimbua (D.Don) S.Moore

Laggera crispata (Vahl) Hepper & J.R.I.Wood

Pseudognaphalium affine (D.Don) Anderb.

Youngia japonica (L.) DC.

Balanophoraceae

Balanophora dioica R. Br. ex Royle

Balsaminaceae

Impatiens arguta Hook f. & Thomson

Impatiens latiflora Hook.f. & Thomson

Impatiens porrecta Wall. ex Hook.f. & Thomson

Impatiens siangensis Gogoi

Begoniaceae

Begonia aborensis Dunn

Begonia acetosella Craib.

Begonia annulata K.Koch

Begonia biserrata Lindl.

Begonia burkillii Dunn

Begonia josephi A.DC

Begonia roxburghii (Miq.) A.DC

Begonia silletensis (A.DC.) C.B. Clarke

Begonia xanthina Hook.

Bignoniaceae

Oroxylum indicum (L.) Kurz

Radermachera gigantea (Blume) Miq.

Stereospermum chelonoides (L.f.) DC

Boraginaceae

Bothriospermum zeylanicum (J.Jacq.) Druce

Cordia dichotoma G.Forst

Cynoglossum wallichii G.Don

Ehretia acuminata R.Br.

Ehretia wallichiana Hook.f. & Thomson ex C.B.Clarke

Rotula aquatica Lour.

Brassicaceae

Cardamine hirsuta L.

Rorippa dubia (Pers.) H.Hara

Burseraceae

Canarium strictum Roxb.

Campanulaceae

Lobelia nummularia Lam.

Lobelia zeylanica L.

Capparaceae

Capparis acutifolia Sweet subsp. sabiifolia (J. D. Hooker & Thomson) Jacobs

Capparis assamica Hook.f. & Thomson

Capparis multiflora Hook.f. & Thomson

Crateva magna (Lour.) DC.

Stixis suaveolens (Roxb.) Baill.

Caryophyllaceae

Brachystemma calycinum D.Don

Stellaria media (L.)Vill

Celastraceae

Microtropis discolor (Wall.) Wall. ex Meisn.

Loeseneriella pauciflora (DC.) A.C.Sm.

Chloranthaceae

Chloranthus elatior Link

Clusiaceae

Garcinia anomala Planch. & Triana

Garcinia lanceifolia Roxb.

Garcinia pedunculata Roxb. ex Buch.- Ham

Garcinia xanthochymus Hook.f. ex T.Anderson

Colchicaceae

Disporum longistylum (H.Lév. & Vaniot) H.Hara

Combretaceae

Terminalia chebula Retz.

Terminalia myriocarpa Van Heurck & Mull.Arg

Commelinaceae

Amischotolype hookeri (Hassk.) H.Hara

Commelina benghalensis L

Floscopa scandens Lour.

Murdannia nudiflora (L.) Brenan

Rhopalephora scaberrima (Blume) Faden

Convolvulaceae

Argyreia argentea (Roxb.) Sweet

Argyreia nervosa (Burm.f.) Bojer

Cornaceae

Alangium chinense (Lour.) Harms

Costaceae

Hellenia speciosa (J.Koenig) S.R.Dutta

Cucurbitaceae

Cucumis maderaspatanus L.

Hodgsonia macrocarpa (Blume) Cong.

Solena heterophylla Lour.

Thladiantha cordifolia (Blume) Cong.

Trichosanthes nervifolia L.

Cyperaceae

Carex baccans Nees

Cyperus digitatus Roxb.

Cyperus rotundus L.

Cyperus distans L.f.

Cyperus mindorensis (Steud.) Huygh

Cyperus pilosus Vahl

Eleocharis geniculata (L.) Roem. & Schult.

Erioscirpus comosus (Wall.) Palla

Fimbristylis bisumbellata (Forssk.) Bubani

Fimbristylis dichotoma (L.) Vahl

Dilleniaceae

Dillenia indica L.

Dioscoreaceae

Dioscorea alata L.

Dioscorea bulbifera L.

Dioscorea esculenta (Lour.) Burkill

Dioscorea pentaphylla L.

Tacca integrifolia Ker Gawl.

Ericaceae

Agapetes bhutanica N.P.Balakr. & Sud.Chowdhury

Agapetes macrantha var. grandiflora (Hook.f.) D.Banik and Sanjappa

Agapetes serpens (Wight) Sleumer

Euphorbiaceae

Balakata baccata (Roxb.) Esser

Bridelia montana (Roxb.) Willd.

Croton caudatus Geiseler

Homonoia riparia Lour.

Mallotus paniculatus (Lam.) Müll.Arg.

Mallotus tetracoccus (Roxb.) Kurz

Ostodes paniculata Blume

Fabaceae

Albizia odoratissima (L.f.) Benth

Archidendron chevalieri (Kosterm.) I.C. Nielsen

Bauhinia purpurea L.

Bauhinia variegata L.

Crotalaria spectabilis Roth

Dalbergia rimosa Roxb.

Dalbergia sissoo Roxb. ex DC.

Dalhousiea bracteata (Roxb.) Graham ex Benth

Entada phaseoloides (L.) Merr.

Erythrina variegata L.

Gymnocladus burmanicus C.E.Parkinson

Leptodesmia microphylla (Thunb.) H.Ohashi & K.Ohashi

Mastersia assamica Benth.

Mucuna macrocarpa Wall.

Ohwia caudata (Thunb.) H.Ohashi

Ototropis multiflora (DC.) H.Ohashi & K.Ohashi

Pueraria montana (Lour.) Merr.

Senegalia catechu (L.f.) P.J.H.Hurter & Mabb.

Senegalia rugata (Lam.) Britton & Rose

Tephrosia candida DC

Fagaceae

Castanopsis indica (Roxb. Ex Lindl.) A.DC.

Castanopsis purpurella (Miq.) N.P.Balakr.

Gesneriaceae

Aeschynanthus acuminatus Wall. ex A.DC

Aeschynanthus gracilis C.S.P.Paris ex C.B Clarke

Aeschynanthus micranthus C.B. Clarke

Aeschynanthus monetarius Dunn

Aeschynanthus parasiticus C.B. Clarke

Aeschynanthus superbus C.B.Clarke

Boeica filiformis C.B.Clarke

Boeica fulva C.B. Clarke

Epithema carnosum Benth

Henckelia siangensis Taram, D.Borah & Tag

Henckelia grandifolia A.Dietr.

Henckelia mishmiensis (Debb. ex Biswas) D.J.Middleton & Mich.Möller

Henckelia oblongifolia (Roxb.) D.J.Middleton & Mich.Möller

Henckelia pumila (D.Don) A.Dietr

Lysionotus gamosepalus W.T.Wang var. gamosepalous

Lysionotus serratus D.Don

Rhynchotechum ellipticum (Wall. ex D.Dietr.) A.DC.

Rhynchotechum obovatum (Griff.) B.L.Burtt

Rhynchotechum parviflorum Blume

Rhynchotechum vestitum Wall. ex C. B. Clarke

Stauranthera grandifolia Benth.

Tetraphylloides bengalensis (C.B.Clarke) Doweld

Gentianaceae

Exacum teres Wall.

Hydrangeaceae

Hydrangea febrifuga (Lour.) Y. De Smet & Granados

Hydroleaceae

Hydrolea zeylanica (L.) Vahl

Hypoxidaceae

Curculigo capitulata (Lour.) Kuntze

Curculigo prainiana (Deb) Bennet & Raizada (SE, Ethnomedicine)

Lamiaceae

Achyrospermum densiflorum Blume

Anisomeles indica (L.) Kuntze

Callicarpa arborea Roxb.

Callicarpa macrophylla Vahl

Clerodendrum chinense (Osbeck) Mabb.

Clerodendrum colebrookeanum Walp.

Clerodendrum indicum (L.) Kuntze

Clerodendrum japonicum (Thunb.) Sweet

Clerodendrum laevifolium Blume

Elsholtzia ciliata (Thunb.) Hyl.

Gmelina arborea Roxb. ex Sm

Isodon coetsa (Buch.-Ham. ex D.Don) Kudô

Leonurus japonicus Houtt.

Leucas chinensis (Retz.) Sm.

Leucas zeylanica (L.) W.T.Aiton

Leucosceptrum canum Sm.

Perilla frutescens (L.) Britt.

Pogostemon brachystachyus Benth.

Pogostemon elsholtzioides Benth.

Pogostemon plectranthoides Desf.

Rotheca serrata (L.) Steane & Mabb.

Tectona grandis L.f

Teucrium viscidum Blume

Lauraceae

Actinodaphne obovata (Nees) Blume

Beilschmiedia assamica Meisn.

Cinnamomum bejolghota (Bucc-Ham) Sweet

Lindera communis Hemsl.

Litsea cubeba (Lours.) Pers.

Litsea glutinosa (Lour.) C.B.Rob.

Litsea monopetala (Roxb.) Pers.

Phoebe cooperiana P.C.Kanjilal and Das

Linderniaceae

Bonnaya antipoda (L.) Druce

Bonnaya ciliata (Colsm.) Spreng.

Torenia bicolor Dalzell

Torenia crustacea (L.) Cham. & Schuldt

Torenia fournieri Linden ex E.Fourn.

Loranthaceae

Helixanthera parasitica Lour.

Lythraceae

Duabanga grandiflora (Roxb. Ex DC) Walp.

Rotala rotundifolia (Buch.-Ham. ex Roxb.) Koehne

Magnoliaceae

Magnolia hodgsonii (Hook.f. & Thomson) H.Keng

Malvaceae

Abroma augustum (L.) L.f.

Ayenia grandifolia (DC.) Christenh. & Byng

Bombax ceiba L.

Grewia asiatica L.

Kydia calycina Roxb.

Melochia corchorifolia L.

Pterospermum acerifolium (L.) Willd

Pterospermum lanceifolium Roxb. ex DC.

Sida acuta Burm.f.

Sterculia lanceolata var. coccinea (Jack) Phengklai

Sterculia striatiflora Mast.

Sterculia villosa Roxb. ex Sm

Urena lobata L.

Marantaceae

Phrynium pubinerve Blume

Mazaceae

Mazus pumilus (Burm.f.) Steenis

Mazus surculosus D.Don

Melanthiaceae

Paris polyphylla Sm.

Melastomataceae

Melastoma malabathricum L

Osbeckia nepalensis Hook.

Osbeckia nutans Wall.

Oxyspora paniculata DC.

Pseudodissochaeta assamica (C.B.Clarke) Nayar

Sarcopyramis napalensis Wall.

Meliaceae

Chisocheton cumingianus (C.DC.) Harms

Dysoxylum alliaceum (Blume) Blume

Melia azedarach L.

Toona hexandra (Wall.) M.Roem

Menispermaceae

Stephania japonica (Thunb.) Miers

Stephania rotunda Lour.

Tinospora cordifolia (Willd.) Hook.f. & Thomson

Molluginaceae

Trigastrotheca pentaphylla (L.) Thulin

Moraceae

Artocarpus heterophyllus Lam.

Artocarpus lacucha Buch.Ham.

Broussonetia papyrifera (L.) L'Hér. ex Vent.

Ficus auriculata Lour.

Ficus crassiramea (Miq.) Miq.

Ficus drupacea Thunb.

Ficus hederacea Roxb.

Ficus heteropleura Blume

Ficus hispida L.f.

Ficus oligodon Miq.

Ficus religiosa L.

Ficus semicordata Buch-Ham ex Sm.

Ficus simplicissima Lour.

Ficus tinctoria G.Forst.

Ficus variegata Blume

Ficus virens Aiton

Maclura cochinchinensis (Lour.) Corner

Morus macroura Miq.

Musaceae

Musa aurantiaca G.Mann ex Baker

Musa balbisiana Colla

Musa sanguinea Hook.f.

Myricaceae

Myrica esculenta Buch.Ham Ex D.Don

Myrtaceae

Syzygium formosum (Wall.) Mason

Syzygium fruticosum DC.

Syzygium aqueum (Burm.f.) Alston

Syzygium cumini (L.) Skeels

Nyctaginaceae

Boerhavia diffusa L.

Olacaceae

Erythropalum scandens Blume

Oleaceae

Jasminum pentaneurum Hand.-Mazz.

Jasminum laurifolium Roxb. ex Hornem. var. laurifolium

Orchidaceae

Arundina graminifolia (D.Don) Hochr

Bulbophyllum odoratissimum (Sm.) Lindl. ex Wall.

Cheirostylis parvifolia Lindl.

Coelogyne fimbriata Lindl. var. fimbriata

Corymborkis veratrifolia (Reinw.) Blum

Cymbidium aloifolium (L.) Sw.

Dendrobium aphyllum (Roxb.) C.E.C.Fisch.

Dendrobium chrysanthum Wall. ex Lindl.

Dendrobium nobile Lindl.

Dendrolirium lasiopetalum (Willd.) S.C.Chen & J.J.Wood

Eulophia dabia (D.Don) Hochr.

Geodorum densiflorum (Lam.) Schltr.

Goodyera procera (Ker Gawl.) Hook.

Nervilia macroglossa (Hook.f.) Schltr.

Pachystoma pubescens Blume

Pholidota pallida Lindl

Rhynchostylis retusa (L.) Blume

Vanda bicolor Griff.

Zeuxine flava (Wall. ex Lindl.) Trimen

Orobanchaceae

Lindenbergia hookeri C.B.Clarke ex Hook.f.

Aeginetia indica L.

Pandanaceae

Pandanus furcatus Roxb.

Phyllanthaceae

Actephila excelsa (Dalzell) Mull.Arg

Baccaurea ramiflora Lour.

Bischofia javanica Blume

Breynia androgyna (L.) Chakrab. & N.P.Balakr.

Leptopus clarkei (Hook.f.) Pojark.

Phyllanthus assamicus Müll.Arg.

Phyllanthus fraternus G.L.Webster

Phyllanthus lanceolarius (Roxb.) Müll.Arg.

Phyllanthus reticulatus Poir.

Piperaceae

Piper attenuatum Buch.-Ham. ex Miq.

Piper griffithii C.DC.

Piper mullesua Buch.-Ham. ex D.Don

Piper pedicellatum C.DC

Piper sylvaticum Roxb.

Plantaginaceae

Plantago asiatica L.

Poaceae

Arundinella nepalensis Trin.

Bambusa tulda Roxb.

Chrysopogon aciculatus (Retz.) Trin

Cynodon dactylon (L.) Pers.

Dendrocalamus giganteus Munro

Dendrocalamus hamiltonii Nees and Arn.ex Munro

Digitaria abludens (Roem. & Schult.) Veldkamp

Digitaria ciliaris (Retz.) Koeler

Dinochloa macclellandii (Munro) Kurz

Echinochloa colonum (L.) Link

Echinochloa crus-galli (L.) P.Beauv.

Eragrostis unioloides (Retz.) Nees ex Steud.

Eulalia hirtifolia (Hack.) Kuntze

Hemarthria compressa (L.f.) R.Br.

Oplismenus burmanni (Retz.) P.Beauv.

Oplismenus compositus (L.) P.Beauv.

Phragmites karka (Retz.) Trin. ex Steud.

Phyllostachys manii Gamble

Pseudoraphis minuta (Mez) Pilg.

Saccharum arundinaceum Retz.

Saccharum spontaneum L.

Sacciolepis indica (L.) Chase

Setaria palmifolia (J.Koenig) Stapf

Setaria pumila (Poir.) Roem. & Schult.

Stapletonia seshagiriana (R.B. Majumdar) H.B. Naithani

Themeda villosa (Lam.) A.Camas

Thysanolaena latifolia (Roxb. ex Hornem.) Honda

Polygonaceae

Koenigia mollis (D.Don) T.M.Schust. & Reveal

Persicaria barbata (L.) H. Hara

Persicaria capitata (Buch - Ham Ex D.Don ) H.Gross

Persicaria chinensis (L.)H.Gross

Persicaria hydropiper (L.) Delarbre

Persicaria nepalensis (Meisn.) H.Gross

Persicaria orientalis (L.) Spach

Persicaria strigosa (R.Br.) H.Gross

Primulaceae

Ardisia solanacea Roxb.

Lysimachia debilis Wall.

Maesa indica (Roxb.) Sweet

Ranunculaceae

Ranunculus cantoniensis DC.

Rafflesiaceae

Sapria himalayana Griff.

Rosaceae

Potentilla indica (Andrews) Th.Wolf

Rubus ellipticus Sm.

Rubus moluccanus L.

Rubus niveus Thumb

Rubus paniculatus Sm.

Rubus rosifolius Sm.

Rubus sumatranus Miq.

Rubiaceae

Argostemma sarmentosum Wall.

Argostemma verticillatum Wall.

Catunaregam spinosa (Thunb.) Tirveng.

Chassalia curviflora var. ophioxyloides (Wall) Deb & B.Krishna

Coffea benghalensis B.Heyne ex Schult.

Dentella repens (L.) J.R.Forst. & G.Forst.

Dimetia scandens (Roxb.) R.J.Wang

Exallage auricularia (L.) Bremek.

Gomphostemma lucidum Wallich ex Bentham

Ixora polyantha Wight

Mussaenda glabra Vahl

Mussaenda roxburghii Hook.f.

Mycetia mukerjiana Deb & Ratna Dutta

Oldenlandia umbellata L.

Paederia foetida L.

Psychotria monticola Kurz

Psychotria silhetensis Hook.f.

Scleromitrion diffusum (Willd.) R.J.Wang

Uncaria macrophylla Wall.

Wendlandia budleioides Wall. ex Wight & Arn.

Rutaceae

Citrus indica Yu. Tanaka

Citrus latipes (Swingle) Yu.Tanaka

Citrus medica L.

Glycosmis pentaphylla (Retz.) DC.

Murraya koenigii (L.) Spreng.

Murraya paniculata (L.) Jack

Murraya tetramera C.C.Huang

Toddalia asiatica (L.) Lam.

Zanthoxylum armatum D.C

Zanthoxylum oxyphyllum Edgew.

Zanthoxylum rhetsa (Roxb.) DC.

Sabiaceae

Sabia lanceolata Colebr.

Salicaceae

Casearia vareca Roxb.

Sapindaceae

Aesculus assamica Griff.

Nephelium lappaceum L.

Saurauraceae

Houttuynia cordata Thunb.

Schrophulariaceae

Buddleja asiatica Lour

Simaroubaceae

Brucea mollis Wall. ex Kurz

Ailanthus integrifolia Lam.

Smilaceae

Smilax ovalifolia Roxb. ex D.Don

Smilax zeylanica L

Solanaceae

Solanum spirale Roxb.

Solanum villosum Mill.

Solanum violaceum Ortega

Lycianthes biflora (Lour.) Bitter

Stemonaceae

Stemona tuberosa Lour

Styraceae

Styrax serrulatus Roxb.

Tamaricaceae

Tamarix dioica Roxb. ex Roth

Theaceae

Pyrenaria barringtoniifolia (Griff.) Seem.

Schima wallichii (DC.) Korth.

Typhaceae

Typha angustifolia L.

Urticaceae

Boehmeria penduliflora Wedd. ex D.G.Long

Boehmeria pilosiuscula (Blume) Hassk.

Debregesia longifolia (Burm.f.) Wedd.

Dendrocnide sinuata (Blume) Chew

Elatostema dissectum Wedd.

Gonostegia hirta (Hassk.) Miq.

Gonostegia pentandra (Roxb.) Miq.

Pilea insolens Wedd.

Pilea umbrosa Wedd. ex Blume

Poikilospermum suaveolens (Blume) Merr.

Pouzolzia calophylla W.T.Wang & C.J.Chen

Pouzolzia zeylanica (L.) Benn.

Urtica ardens Link.

Urtica dioica L.

Viburnaceae

Sambucus adnata Wall. ex DC.

Violaceae

Viola betonicifolia Sm.

Viola pilosa Blume

Viola thomsonii Oudem.

Vitaceae

Ampelocissus hoabinhensis C.L.Li

Causonis trifolia (L.) Mabb. & J.Wen

Cissus assamica (M.A.Lawson) Craib

Leea indica (Burm.f.) Merr.

Parthenocissus semicordata (Wall.) Planch.

Tetrastigma leucostaphylum (Dennst.) Alston

Zingiberaceae

Alpinia nigra (Gaertn.) Burtt

Alpinia roxburghii Sweet

Amomum maximum Roxb.

Amomum pterocarpum Thwaites

Amomum subulatum Roxb.

Globba multiflora Wall. ex Baker

Hedychium coccineum Buch.-Ham. ex Sm

Hedychium stenopetalum G.Lodd

Hornstedtia arunachalensis S. Triphathi & V.Prakash

Larsenianthus arunachalensis M.Sabu, Sanoj & Rajesh Kumar

Larsenianthus assamensis S.Dey, Mood & S.Choudhury

Larsenianthus careyanus (Benth. & Hook.f.) W.J.Kress & Mood

Zingiber sianginensis Tatum & A.K. Das

Zingiber zerumbet (L.) Roscoe ex Sm.

References:

Momang Taram, Dipankar Borah, Hui Tag, Ritesh Kumar Choudhary. 2020. Floristic inventory of the native vascular plants in East Siang district of the eastern Himalayas in Northeast India. Journal of Threatened Taxa