Viola crassa

Viola crassa is a species of flowering plant in the family Violaceae. It is native to Japan, Kamchatka Krai, the Kuril Islands, and Sakhalin.

Taxonomy

Viola crassa contains the following subspecies:Viola crassa subsp. alpicolaViola crassa subsp. crassaViola crassa subsp. ''yatsugatakeana''