The Great spurred violet (Viola selkirkii) belongs to the Violaceae (the Violet family). It is a perennial herb that is native from Hokkaido to Honshu, Shikoku, and the southern Kuril Islands, and widely the cool temperate and the subarctic region of Northern Hemispere. This herb grows in wettish deciduous forests on low lands to sub-alpine zone, and it can reach 3-10 cm in height. The leaves are heart-shaped with acute tips and wavy toothed edges. The bright magenta flowers bloom in May and June. The bases of lateral petal are hairless.