A genus of about 525 species, vines, shrubs, and trees, largely of tropical America, with a few species in warm temperate America and Asia.
ID notes:Passiflora flowers are structurally striking. There are 5 sepals and either 0 or 5 petals; a corona of numerous linear structures is present, arranged in 1-several series. The ovary, 3 styles, and 5 stamens are basally adnate and elevated on an androgynophore. Most species have glands on the leaves which function as extrafloral nectaries; these can be seen as paired glands on the leaf petiole (in all our species except P lutea), and some species also have laminar glands on the leaf blade, near the margin.
Ref: Acevedo-Rodríguez & Strong (2012); Feuillet & MacDougal In Kubitzki, Bayer, & Stevens (2007); Goldman & MacDougal (2015) In Flora of North America Editorial Committee (2015); Killip (1938); Porter-Utley (2014); Ulmer & MacDougal (2004); Vanderplank (2000); Vanderplank (2013). Show full citations.