Viola tricolor L. var. hortensis DC.

例句：

1. 1.The garden is filled with vibrant purple flowersof the Viola tricolor.
   花园里充满了紫罗兰的鲜艳花朵。
2. 2. The Viola tricolor is a popular choice forwedding bouquets.
   三色堇是婚礼花束中常见的选择。
3. 3. TheViola tricolor hasbeen used in traditional Chinese medicinefor centuries.
   三色堇在传统中医中被使用了几个世纪。