PetreaPetrea is a genus of evergreen flowering vines native to tropical Americas.The genus was named in honour of Robert James Petre, an English patron of botany.SpeciesThe following species are currently recognized:Petrea blanchetiana Schauer Petrea bracteata Steud.Petrea ''brevicalyx DuckePetrea campinae RuedaPetrea insignis SchauerPetrea macrostachya Benth.Petrea maynensis HuberPetrea pubescens Turcz.Petrea rugosa KunthPetrea sulphurea Jans.-Jac.Petrea volubilis'' L.