1、 Blade difference

The leaves of Corydalis are alternate, lanceolate or ovate, serrated or divided at the edge, and the stipules are small and leafy

The basal leaves of Pansy are long ovate or lanceolate, the stem leaves are ovate, oblong or oblong lanceolate, and the apex is round or blunt. Stipules are larger and leafy

2、 The difference between flowers

The flower diameter of Corydalis Corydalis is 2.5-4cm, and the flower color is very rich. The petals have lighter colors such as red, white, yellow, purple and blue. There is no dot in the middle of the flower, but only a black straight line. The overall flower shape is long

The flower of tricolor viola is larger than that of horny Viola, sometimes 2-3 times the size of the former, with a diameter of 3.5-6 cm. Usually, there are three flower colors, purple, white and yellow. There is a black spot in the middle of the flower, like a ghost face, while the former does not, the flower color is also deeper, and the overall flower shape is round