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Chinese Plant Names | Family List | Dioscoreaceae | Dioscorea

Dioscorea poilanei Prain et Burkill


Description from Flora of China

Rhizome horizontal, irregularly branched, cylindric, to 1.5 cm thick, hard. Stem twining to left, glabrous, smooth except inconspicuously shortly prickly near nodes. Leaves alternate, simple; petiole 6--8 cm; leaf blade drying grayish brown, triangular-ovate or nearly triangular-sagittate, 10--12 × 6--10 cm, thinly leathery, glabrous, basal veins 3--7, outermost ones much shorter, reticulate veins prominent, base auriculate, apex acuminate. Male spikes solitary or 2--4 together, to 20 cm. Male flowers: solitary or paired; pedicel ca. 2.5 mm; perianth lobes ± reflexed, oblong or oblong-ovate, outer ones ca. 1 mm, wider than inner ones; stamens 6, inserted at margin of perianth tube, less than 0.8 mm. Female spikes similar to male ones. Capsule bronze, shiny, ovoid-globose, 2.8--3.2 cm, apex truncate; wings ca. 1.5 cm wide. Seeds inserted near middle of capsule, winged all round. Fl. Jun--Aug, fr. Aug--Oct.

Forests, scrub; near sea level to 200 m. Hainan [Cambodia, Laos, Malaysia, Thailand, Vietnam].


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