The color of Viola flowers is lighter, showing the appearance of pink and purple. The petals are like symmetry, mostly like axisymmetry. The florescence is as early as about April. The calyx edge under the flowers is arranged with the incisions like teeth.
The color of the flower is dark purple or blue purple. The petals are not symmetrical. The florescence is later than that of the former. It will only open after the failure of Viola. The edge of the calyx is relatively smooth or truncated.
The former petiole is very long without narrow wings, 1-4.5 cm long, a little like a heart shape.
The latter has longer leaves, shorter petioles and narrow wings.
