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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 TRIFIDA L. f.
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PlaceOfPublication
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Suppl. 427. 1781.
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Description
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Stems climbing sinistrorsely, glabrous, at least the lower conspicuously 4- winged on the angles; leaves alternate; petioles up to 15 cm. long, winged, minutely puberulous; leaf blades variable, the larger leaves deeply 5-lobed, over 15 cm. long and wide, the smaller leaves deeply 3-lobed (the lobes all acute), deeply cordate at base, pellucid-lineolate, minutely puberulous on upper surface and-along veins beneath; staminate spikes 2-5 in an axil, shorter than leaves, Un- branched, the rhachis subtomentose; flowers solitary (or subfasciculate?), short- pedicellate, the pedicels 1.5-2 mm. long, pilosulous; perianth segments oblong, about 2.5 mm. long, pilosulous externally; stamens 6, all fertile, borne on perianth segments, the filaments about 1 mm. long, the anthers 0.25 mm. long, introrse; rudimentary style conspicuous; ovary pilose; capsule 27 mm. long and 17 mm. wide (teste Knuth), puberulent.
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Distribution
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Guatemala, south to Peru and Brazil. West Indies.
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Specimen
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CANAL ZONE: Balboa, Standley 26453; between France Field and Catival, Standley 30396. PANAMA: Rio Tapia, Standley 28120.
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