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Passiflora Linnaeus. Passionflower.

Key to Passiflora

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.

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Hover over a shape, letter, icon, or arrow on the map for definition or see the legend. Data for arrows not developed for genera and families which may have species only occurring outside the flora area.

image of plant© Alan Cressler: Passiflora caerulea, Private Garden, Shelby County, Alabama 1 by Alan Cressler | Passiflora caerulea source | Original Image ⭷
image of plant© Gary P. Fleming | Passiflora lutea | Original Image ⭷

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