Vasilis Teodoridis:
Dioscoreaceae | Dioscorea
6. Dioscorea deltoidea Wallich ex Grisebach in Martius; Fl. Bras. 3(1): 43. 1842.
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Rhizome horizontal; ginger-shaped; 1.2--1.5 cm thick. Stem twining to left; drying light brown to purplish brown; grooved. Leaves alternate; simple; petiole 4--10(--15) cm; leaf blade drying gray-green; triangular or triangular-ovate; usually 3-lobed; 5--9 x 4--5.5 cm; adaxially glabrous; abaxially papillose-setulose along veins; basal veins 3--7; outermost ones much shorter; base shallowly cordate (with very broad sinus) to subtruncate; apex of middle lobe acuminate; apex of lateral lobes rounded. Male spike solitary; sometimes branched; 9--16 cm. Male flowers: solitary or paired; sessile; bracts broadly ovate; membranous; apex acute; perianth saucer-shaped; 3--3.5 mm in diam.; lobes ovate; ca. 0.8 mm wide; stamens 6; inserted at base of perianth; anthers 3 introrse and 3 extrorse; connectives not fork-shaped. Female spike to 5 cm; 4--6-flowered. Female flowers: staminodes present. Capsule reflexed; brown at maturity; purplish brown spotted; globose or oblong-obovoid; (1.5--)1.8--2.2 cm; base rounded; apex emarginate or rounded; wings (0.7--)1.2--1.4 cm wide. Seeds inserted near middle of capsule; ovate; winged all round. Fl. May--Jun; fr. Jun--Sep.
Broad-leaved forests; scrub forests; 2000--3100 m. Sichuan; Xizang; Yunnan [Bhutan; India; Myanmar; Nepal; Sikkim; Thailand; Vietnam].
Vasilis Teodoridis:
Dioscoreaceae | Dioscorea
6. Dioscorea deltoidea Wallich ex Grisebach in Martius; Fl. Bras. 3(1): 43. 1842.
????? san jiao ye shu yu
Rhizome horizontal; ginger-shaped; 1.2--1.5 cm thick. Stem twining to left; drying light brown to purplish brown; grooved. Leaves alternate; simple; petiole 4--10(--15) cm; leaf blade drying gray-green; triangular or triangular-ovate; usually 3-lobed; 5--9 x 4--5.5 cm; adaxially glabrous; abaxially papillose-setulose along veins; basal veins 3--7; outermost ones much shorter; base shallowly cordate (with very broad sinus) to subtruncate; apex of middle lobe acuminate; apex of lateral lobes rounded. Male spike solitary; sometimes branched; 9--16 cm. Male flowers: solitary or paired; sessile; bracts broadly ovate; membranous; apex acute; perianth saucer-shaped; 3--3.5 mm in diam.; lobes ovate; ca. 0.8 mm wide; stamens 6; inserted at base of perianth; anthers 3 introrse and 3 extrorse; connectives not fork-shaped. Female spike to 5 cm; 4--6-flowered. Female flowers: staminodes present. Capsule reflexed; brown at maturity; purplish brown spotted; globose or oblong-obovoid; (1.5--)1.8--2.2 cm; base rounded; apex emarginate or rounded; wings (0.7--)1.2--1.4 cm wide. Seeds inserted near middle of capsule; ovate; winged all round. Fl. May--Jun; fr. Jun--Sep.
Broad-leaved forests; scrub forests; 2000--3100 m. Sichuan; Xizang; Yunnan [Bhutan; India; Myanmar; Nepal; Sikkim; Thailand; Vietnam].