They are a perennial plant that ordinarily grows at sunny places such as he grassfields and the roadside around human habitations, or on stonewalling and in the fields. (Perennial plant takes several years to grow). The stalk and the leaf have minute whitish paraphyllium thickly. Though they resemble Viola mandshurica (Violaceae) well, the flowers of Viola yedoensis have smell and the tip of the leaf is sharp. This is how to distinguish the two. Their characteristic is they expand flat on the ground, while the leaf of Viola mandshurica grows vertically. The flower is about 1 to 1.5 cm in diameter, bluish-purple color with the flower petals striped in dark purple. The leaf is about 3 to 8 cm long, long spatulate elliptically-shaped, with the back tinged with purple, and both of the upper parts of the leafstalk (Youhei) have fins. When the flowers wither, triangular summer leaves sprout.

●Season Late March to about Mid April
●Height about 5 to 10 cm
●Place Trail 6, Ura-Takao, Minami-Takao