Petrea is a genus of evergreen flowering vines native to tropical Americas, ranging from Florida and northeastern Mexico to Bolivia, Paraguay, and southern Brazil.
The genus was named in honour of Robert James Petre, an English patron of botany.
Species 14 species are accepted. Petrea aspera Petrea asperifolia Petrea blanchetiana Petrea bracteata Petrea brevicalyx Petrea campinae Petrea guianensis Petrea insignis Petrea macrostachya Petrea maynensis Petrea pubescens Petrea rugosa Petrea sulphurea Petrea volubilis
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