Contains 4 accepted taxa overall.

Characteristics
Passiflora L.
PASSIONFLOWER
Classification
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MALPIGHIALES
Passiflora
Citation
PASSIFLORA Linnaeus, Sp. Pl. 955. 1753, nom. cons.
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TYPE: Passiflora incarnata Linnaeus, typ. cons.
Species
Scientific Name Common Name Herbarium Specimens Status Photos
Passiflora gracilis Annual Passionflower
Passiflora incarnata Maypops, Purple Passionflower
Passiflora lutea Eastern Yellow Passionflower
Passiflora morifolia
Identification Key
1.  Petiole without glands; leaf blades mostly entire
2
1.  Petiole with glands, or glands inconspicuous; leaf blades entire or toothed
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2.  Stems, tendrils, leaves, and fruit tomentulose to pubescent
2.  Stems, tendrils, leaves, and fruit glabrate
3
3.  Leaf blade usually bilobed or occasionally obscurely 3-lobed, with conspicuous rows of nectaries; flowers often paired; corolla white
3.  Leaf blade usually 3-lobed, lacking nectaries; flower usually solitary; corolla greenish yellow
4.  Petiole, leaf blade, and calyx with numerous gland-tipped trichomes
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4.  Petiole usually with a pair of glands and without gland-tipped trichomes, the leaf blade and calyx without gland-tipped trichomes
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5.  Petals and sepals pink to white; outer corona filaments 8-15 mm long, the basal portion pink, mauve, blue to purple towards, middle portion white, distal portion pink, blue-mauve, to very pale mauve (nearly white); mature fruit red
5.  Petals and sepals white (sometimes lightly pink tinged distally); outer corona filaments 10-18 mm long, filiform, the basal portion mauve to lilac, distal portion white; mature fruit yellow to orange
6.  Leaf blade margin entire to undulate
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6.  Leaf blade margin toothed
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7.  Stipules foliaceous, clasping; petiolar gland stalked, capitate to cylindric
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7.  Stipules linear to subulate; petiolar gland sessile, globular or inconspicuous
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8.  Petiolar gland capitate; leaf blade sinuses mostly deeply acute
8.  Petiolar gland cylindric; leaf blade sinus mostly shallowly rounded
9.  Stems and leaves densely tomentulose-puberulent; leaf blade reticulate venation pronounced and prominent on the lower surface; ovary sessile
9.  Stems and leaves glabrate to puberulent; leaf blade reticulate venation mostly obscure to apparent and flat on the lower surface; ovary borne on a gynophore
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10.  Leaf blade nectaries absent, the blade base cuneate to acute; sepals (2.3)4.0-7.0(8.3) mm long; hypanthium 2.8-4.1 mm wide; androgynophore (1.7)2.2-3.5 mm long; outer coronal filaments 1.2-4.0 mm long; inner coronal filaments less than 1.4 mm long; staminal filaments 1.4-3.0 mm long, pollen yellow; fruits globose or ellipsoid; peninsular Florida
10.  Leaf blade nectaries present or absent, the blade base commonly cordate or cuneate to acute; sepals 4.0-14.6(20.5) mm long; hypanthium (3.0-)4.0–8.8 mm wide; androgynophore (2.1)2.7-6.1(12.6) mm long; outer coronal filaments 2.5-8.1 mm long; inner coronal filaments more than 1.4 mm long; staminal filaments 1.6-6.0(6.8) mm long, pollen whitish or yellow; fruits ovoid, ellipsoid or transversely ellipsoid; considered absent from Florida
11.  Leaf blade unlobed
11.  Leaf blade usually lobed
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12.  Petiolar glands inconspicuous; petals and outer corona red
12.  Petiolar glands conspicuous; petals and outer corona white to purple
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13.  Petiolar gland ca. mid-petiole; leaf blade usually 5-lobed
13.  Petiolar gland in the distal third; leaf blade usually 3-lobed
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14.  Leaf blade lustrous on the upper surface; bracts subtending flower 15-25 mm long; androgynophore with a 5-lobed swelling at the opening of the floral tube; fruit green-yellow to purple, the pulp yellow to orange
14.  Leaf blade dull on the upper surface; bracts subtending flower 3-8 mm long; androgynophore lacking an evident swelling at the opening of the floral tube; fruit green to greenish yellow, the pulp whitish to pale yellow
Genus Synonyms
Synonym Full Citation Basionym Type
No synonyms found.