Viola long-calyx
Also known as: Lithospermum
Phylum: Angiosperm
Class: Dicotyledon
p>Order: Sapindus
Family name: Violaceae
Chinese name: Viola is a perennial herb. The main root is short, thick and white. The leaves are clustered, long ovate to triangular ovate, 2 to 6 cm long, 1.5 to 4 cm wide, with blunt apex, heart-shaped base, blunt serrated edges, slightly purple below, and slightly hairy or hairless on both sides and petioles. . Use the whole plant as medicine.