Rupertia is a small genus of flowering plants in the legume family, Fabaceae. It belongs to the subfamily Faboideae. There are three species native to western North America, especially California.Jepson Manual Treatment Two of the species are quite rare.
Three species: Rupertia hallii (Rydb.) J.W. Grimes Rupertia physodes (Douglas ex Hook.) J.W.Grimes Rupertia rigida (Parish) J.W.Grimes
References
External links USDA Plants Profile