1. An aquatic plant (Nuphar advena) of eastern Mexico and the eastern and central United States, having emergent broad leaves and globe-shaped yellow flowers.

• 萍蓬草：一种产于墨西哥东部、美国东部和中部的水生植物（萍蓬草属圆叶萍蓬草），叶宽并浮于水面，开球形黄色花