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(Last Modified On 10/28/2012)
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(Last Modified On 10/28/2012)
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Species
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DIoSCOREA POLYGONOIDES Humb. & Bonpl. ex Willd.
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PlaceOfPublication
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Sp. Pl. 4:795. 1806.
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Description
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Stems slender, glabrous, unarmed, climbing sinistrorsely; leaves alternate; petioles up to 6 cm. long, glabrous; leaf blades ovate-orbicular, up to 11 cm. long and 8.5 cm. wide, abruptly acuminate, deeply cordate at base, thin-mem- branous, pale yellow-green, glabrous, 11-nerved; staminate inflorescences 2-4 in an axil, 10-30 cm. long, unbranched, or rarely a little branched, the rhachis glabrous, minutely scabrous; flowers sessile in few-flowered fascicles; perianth seg- ments green, 1.3 mm. long, ovate, united in tube at base, glabrous; fertile stamens 3, inserted on perianth segments, the filaments short, the connective broad, the anther cells disjunct, extrorse; staminodia 3, nearly as long as the filaments, bifid at apex; rudimentary style large; pistillate spikes solitary or paired, unbranched, 15 cm. long or less, glabrous; capsules oval, about 1.7 cm. long and 1.2 cm. wide, glabrous; seeds winged all around.
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Distribution
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Mexico to Colombia and Brazil. West Indies.
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Specimen
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CANAL ZONE: Balboa, Standley 25232, 25281, 25419, 25555, 26466, 26489, 26984, 27I49, 27i64, 29285, 32I41; Las Cascadas Plantation near Summit, Standley 25676, 2577I; Las Cruces Trail, between Fort Clayton and Corozal, Standley 29049; road to Corozal, Heriberto 248; between France Field and Catival, Standley 30363; Gamboa, Pittier 4802.
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