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FOC | Family List | FOC Vol. 16 | Asclepiadaceae

26. Dischidia R. Brown, Prodr. 461. 1810.

眼树莲属 yan shu lian shu

Collyris Vahl.

Herbs epiphytic or epilithic. Stems and branches fleshy, usually climbing by adventitious roots, sometimes also twining, or hanging. Leaves opposite or partly in whorls of 3 or 4, fleshy [sometimes leafless]. Inflorescences extra-axillary, small; rachis thick, often branched, eventually elongated, producing a series of often umbel-like groups of flowers. Flowers mostly very small. Calyx with 5 basal glands. Corolla white, red, or violet, ovoid to urceolate, with a narrow mouth, fleshy; lobes valvate in bud, short, often hairy. Corona lobes 5, slender, inserted on gynostegium, erect or ascending, apex entire, notched, 2-cleft, or with recurved arms. Anthers erect, with apical membrane overlying stigma head; pollinia 2 per pollinarium, margin translucent, caudicles enlarged at apex, erect. Follicles lanceolate or cylindric.

About 80 species: tropical and subtropical Asia and Oceania, five in China.

1 Leaf blade narrowly elliptic, acuminate at both ends; corolla throat not thickened, retrorsely pubescent   1 Dischidia australis
+ Leaf blade elliptic or ovate-elliptic to orbicular, apex acute to rounded or retuse, base cuneate to rounded; corolla throat thickened, antrorsely pubescent.   (2)
2 (1) Corolla lobes with 3-angled tips, corolla usually glabrous, occasionally throat softly hairy   2 Dischidia tonkinensis
+ Corolla lobes flat or only slightly thickened, corolla throat or lobes obviously hairy.   (3)
3 (2) Leaf blade apex retuse; corolla lobes with a distinct tuft of hairs at middle on inside; corona lobes longer than gynostegium   5 Dischidia formosana
+ Leaf blade apex rounded; corolla lobes glabrous, throat hairy; corona lobes shorter than gynostegium.   (4)
4 (3) Leaf blade orbicular or ovate   4 Dischidia nummularia
+ Leaf blade elliptic, narrowly elliptic, or ovate-elliptic   3 Dischidia chinensis

Lower Taxa


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