莕菜属（学名：Nymphoides）是睡菜科下的一个属，为浮水草本植物。该属约有50多个种，分布于热带和温带的淡水中。

Nymphoides peltatum is an aquatic plant. It has a long creeping stem that floats and connects to the leaf nodes. It is commonly found in ponds and slow moving bodies of water. It cannot grow in the shade and has to have a relatively deep body of water. Flowers bloom in July to September, while the seeds ripen from August to October.