This work presents an inventory of the species of the genus Zornia J.F.Gmel. in State of São Paulo. Nine species have been recognized: Zornia gardneriana Moric., Z virgata Moric., Z cryptantha Arechav., Z ramboiana Mohlenbr., Z. glabra Desv., Z reticulata Sm., Z latifolia Sm., Z curvata Mohlenbr. and Z gemella (Willd.) Vogel. Zornia paniculata N.F. Mattos was considered synonymous of Z virgata. An identification key for these species as well their descriptions, comments, illustrations and updates geographic distribution data were provided.
Zornia; Leguminosae; Papilionoidae; Aeschynomeneae