Viola yedoensis is a perennial herb, belonging to Violaceae and viola. It has no aboveground stem, is a little shorter, about 4-14cm high, and can reach more than 20cm high in the fruit stage.
As a biennial gray green herb, it belongs to Papaveraceae and Corydalis, with higher height and main root, about 10-50 cm in height. The base of stem has branches and the color is gray green. These two kinds of plants are similar, but they are different and have different functions.
The leaves of Viola yedoensis belong to basal, the leaves of the lower part are relatively small, the shape is triangular or narrow ovate, the leaves of the upper part are relatively long, the shape is oblong, oblong ovate, the length is about 1.5-4cm, the width is about 0.5-1cm, the color is pale white or light green.
The shape of the leaves is oval. The shape of the upper part is the same as that of the lower part. The length of the leaves is about 1.5-3.5 cm, and the color is gray green.
The flowers of Viola are medium-sized, purplish or lavender, sometimes white, with purple stripes at the throat.
The color of the flower is pink to lavender, the shape is relatively flat.
