Erodium Aiton California Aldasoro et al. Geraniopsis Chrtek = Geranium L. Geranium L. Hypseocharis J. Remy Monsonia L. Neurophyllodes (A. Gray) O. Degener = Geranium L. Pelargonium Aiton Robertianum Picard = Geranium L. Robertiella = Geranium L. Sarcocaulon (Candolle) Sweet
Synonymy in part from Albers and van der Walt (2006).