Onagraceae Juss. in Núcleo Curucutu, Parque Estadual Serra do Mar, São Paulo State, Brazil.

ABSTRACT This study consisted of the floristic survey and taxonomic study of Onagraceae in Núcleo Curucutu, Parque Estadual Serra do Mar, São Paulo State, Brazil. In order to better identify the species, analytical key, morphological descriptions, illustrations, geographical distribution and phenology data are provided. The family is represented in the area by five species: Fuchsia regia (Vell.) Munz., Ludwigia burchellii (Micheli) H.Hara., L. elegans (Cambess.) H.Hara., L. longifolia (DC.) H.Hara and L. octovalvis (Jacq.) P.H.Raven.