Any of various widely cultivated South American plants of the genus Petunia,having alternate,entire leaves and funnel-shaped flowers in colors from white to purple.

• 矮牵牛，一种广泛种植于南美的矮牵牛属植物，有边缘光滑的互生叶和喇叭状、颜色从白色到紫色的花朵。