墨苜蓿（学名：Richardia scabra）为茜草科墨苜蓿属下的一个种。

Richardia scabra, commonly called rough Mexican clover or Florida pusley, is a species of flowering plant in the coffee family. It is widespread, native to warm areas of both North America and South America. In the southeastern United States, it is often found in disturbed habitats.