| General Information |
| Distribution | Native from Mexico and the West Indies to Argentina.In the Hawaiian Islands,
naturalized on
Kaua`i, O`ahu, Moloka`i, Lana`i, Maui, Hawai`i.
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Habit
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Lianas up to 15 m or more long, often rooting at the nodes, glabrous or nearly so.
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Leaves
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Leaves drying dark green to nearly black, dimorphic, juvenile plants with small leaflets 1-2 cm long, 0.4-0.8 cm wide, mature leaflets narrowly ovate to lanceolate, 5-16 cm long, 1.2-6.9 cm wide, both surfaces sparsely lepidote, tendril deciduous, 3-forked, 0.1-3.5 cm long, each fork bearing a small horny hook.
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Flowers
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Flowers usually in axillary clusters of
1-3(-15); calyx cup-like, 0.1-1.8 cm long, glabrous to sparsely lepidote, margins crenulate-undulate; corolla yellow with ca. 9 orange lines in the throat, tubular-campanulate, 4.5-10 cm long, 1.2-2.4 cm wide at the mouth, the tube 3.3-6.9 cm long, puberulent within along the throat ridges.
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Fruit
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Capsules drying blackish, linear, flattened, tapering at both ends, 26-95 cm long, 1-2 cm in diameter, inconspicuously lepidote.
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Seeds
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Seeds 1-1.8 cm long, 4.2-5.8 cm wide, the wings membranous, not sharply demarcated from the seed body.
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Chromosomes
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2n = 40, 80
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