They are a perennial plant that grows at humid places such as in the plain field or under the forest in the mountain district. (Perennial plant takes several years to grow). Like Viola grypoceras, they smell slightly good smell. This is why they are named ‘Viola obtusa’. The leaf stipule (Takuyou) grown at the leafstalk (Youhei) has a split like a teeth of a comb. The flower is about 1.2 to 1.5 cm in diameter and the flower petals are roundish. Their characteristic is they are tinged with dark purple, but as a portion of the root of flower petals is white, they seem to be bright white.Tubular nectary or spur (Kyo: a portion of outpunching behind the flower petal) is thin and long about 6 to 7 mm long. The stalk and peduncle have minute whitish paraphyllium thickly. The radical leaf (KON-SEI-YO: leaf spring up from the place about stalk root) is roundish heart-shaped. The leaves grown on the stalk is the thin and sharp triangular shape about 2.5 to 4 cm long.

●Season Late March to about Late April
●Height about 5 to 15 cm
●Place Oku-Takao, Minami-Takao