Annual to biennial herbs, pubescent. There are three colors of blue, white and powder. Stems from basal branches, creeping lower ground at the lower part. Triangular round or nearly round leaves are opposite to the lower part of the stem, the upper part is alternate, and the margin is round. Early spring purple red flowers, only in the axillary. The fruit period is 3-5 months.

圖片編號： 113730676
拍攝者： Szx010