kingdom Plantae - plants »  divisio Magnoliophyta - flowering plants »  class Rosopsida - eudicots » order Malpighiales »  family Violaceae »  tribus Violeae > genus Viola > Viola sect. Plagiostigma Godr.  > Viola subsect. Stolonosae  Kupffer   

Viola epipsila Ledeb.

synonyms:  Viola scanica Fries, Viola suecica Fries, Viola pubinervis Rehman et Woloszczak, Viola palustris var. epipsila(Ledeb.) Maxim. 

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• Viola epipsila var. repens (W. Becker) R. J. Little – Viola epipsiloides Á. Löve & D. Löve - Dwarf Marsh Violet

• Viola epipsila subsp. repens W. Becker – Viola epipsiloides Á. Löve & D. Löve - Dwarf Marsh Violet

Distributional Range: Native Asia-Temperate SIBERIA: Russian Federation [Sverdlovsk, Khanty-Mansi, Yamal Nenets] CHINA: China [Heilongjiang Sheng, Jilin Sheng] Europe NORTHERN EUROPE: Denmark, Finland, Iceland, Norway, Sweden MIDDLE EUROPE: Czechoslovakia, Germany, Poland EASTERN EUROPE: Belarus, Estonia, Latvia, Lithuania, Russian Federation, [Komi, Arkhangelsk, Nenets, Perm] Russian Federation-European part, [European part] Ukraine SOUTHEASTERN EUROPE: Romania Northern America SUBARCTIC AMERICA: Canada, [Northwest Territories, Yukon] United States [Alaska] EASTERN CANADA: Canada [Ontario] WESTERN CANADA: Canada [Manitoba] NORTHEASTERN U.S.A.: United States [Michigan]

Habitat:  Open to half-shady, wet, undisturbed habitats, often in Plagiomnium moss; basiphilous (soil pH 5–7). – Margins of (and tussocks in) eutrophic fens, wet Salix thickets, forest swamps, wet alluvial meadows. Becomes edaphically more demanding at its southern limit of distribution (soil pH > 6). 

References:

1. Marcussen T.  Violaceae in Flora Nordica 2010 >https://www.researchgate.net/publication/256544904_Violaceae

2. Aldén, B., S. Ryman, & M. Hjertson. 2012. Svensk Kulturväxtdatabas, SKUD (Swedish Cultivated and Utility Plants Database; online resource) URL: www.skud.info

3. Chinese Academy of Sciences. 1959-. Flora reipublicae popularis sinicae.

4. Cody, W. J. 1996. Flora of the Yukon Territory.

5. Czerepanov, S. K. 1995. Vascular plants of Russia and adjacent states (the former USSR) Cambridge University Press.

6. Huxley, A., ed. 1992. The new Royal Horticultural Society dictionary of gardening

7. Komarov, V. L. et al., eds. 1934-1964. Flora SSSR.

8. Missouri Botanical Garden. Flora of China Checklist (on-line resource).

9. Scoggan, H. J. 1978-1979. The flora of Canada, 4 vol.

10. Tutin, T. G. et al., eds. 1964-1980. Flora europaea.

11. Voss, E. 1972-. Michigan flora.