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FOC | Family List | FOC Vol. 11 | Euphorbiaceae

42. Megistostigma J. D. Hooker, Hooker’s Icon. Pl. 16: t. 1592. 1887.

大柱藤属 da zhu teng shu

Authors: Huaxing Qiu & Lynn J. Gillespie

Subshrubs, twining, monoecious; indumentum of simple and stinging hairs. Leaves alternate; stipules conspicuous; leaf blade simple, margin entire or denticulate; basal veins 3. Inflorescences axillary, unbranched, usually bisexual, sometimes unisexual, female flowers few, proximal, male flowers distal. Male flowers: calyx base somewhat hollowed with raised rim, lobes 3, valvate; petals absent; disk absent; stamens 3, erect, alternate with calyx lobes; filament short and thick; connective thickened, triangular-ovate, apex obtuse and apiculate, thecae divergent, introrse; pistillode absent. Female flowers: sepals (3 or)5 or 6, imbricate, accrescent; petals absent; disk absent; ovary covered with stinging hairs, 3-locular; ovules 1 per locule; styles connate into a massive subglobose or clavate column, narrowed and sometimes stalklike at base, broadly 3-lobed at apex. Fruit a capsule, depressed globose. Seeds globose, mottled.

Five species: SE Asia; two species (one endemic) in China.

1 Stipules oblong, 2.5-3 mm; leaf blade broadly cordate-ovate, margin denticulate or subentire; inflorescence 3-4 cm, with 1 female flower and 4-6 male flowers.   1 M. burmanicum
+ Stipules triangular-lanceolate, 7-9 mm; leaf blade elliptic or obovate, margin entire; inflorescence 5-7 cm, with 1 female flower and 5-10 male flowers.   2 M. yunnanense

Lower Taxa


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