Richardia

About

Richardia (Mexican-clover) is a genus of about fifteen species of flowering plants in the family Rubiaceae. They are native to tropical to warm, temperate regions of the Americas, with one species also native to Fiji. They are mostly annual plants, though a few species are herbaceous perennial plants.Selected speciesRichardia brasiliensis. Guyana and Brazil south to northern Argentina. Richardia grandiflora. Brazil. Richardia scabra. Southeastern United States south to Peru. Richardia tricocco. Southern Louisiana and Texas south to central Mexico.

Summary from Wikipedia