The leaves of Corydalis are usually basic, and their leaves are mostly round, kidney shaped or wide egg shaped heart-shaped. When flowering, their leaves will start to become smaller. When flowering, they will become larger again. The front of the leaves is round or a little sharp, and there are round blunt teeth on the edge of the leaves.
The leaves of Viola tricolor are mostly oval, oblong and round. The front of the leaves is round or blunt.
The flowers of Corydalis are usually large, mostly dark purple, fragrant, and slender pedicels.
The flowers of Pansy are relatively small, with various colors, usually purple, white and yellow, and the pedicel is a little thicker.