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FOC | Family List | FOC Vol. 11 | Euphorbiaceae

53. Blachia Baillon, Étude Euphorb. 385. 1858.

留萼木属 liu e mu shu

Authors: Bingtao Li & Michael G. Gilbert

Shrubs, monoecious. Leaves simple, alternate, shortly petiolate; leaf blade entire, rarely divided; venation pinnate. Inflorescences terminal or axillary, male flowers in dense or lax racemelike thyrses, female flowers in umbel-like or racemelike inflorescences, sometimes 1 to several inserted at base of male inflorescences; bracts absent; pedicels delicate. Male flowers: sepals 4 or 5, imbricate; petals 4 or 5, shorter than sepals; disk glands scalelike; stamens 10-30, inserted on elevated receptacle; filaments free. Female flowers: pedicels stouter in upper part; sepals 5, accrescent or slightly so; petals absent; disk annular or divided; ovary 3- or 4-locular; ovules 1 per locule; styles 3, free, bifid. Capsule slightly depressed globose, with 3 longitudinal grooves. Seeds not strophiolate; endosperm fleshy; cotyledon broad and flat.

About ten species: tropical regions of Asia; four species in China.

1 Leaf apex rounded, rarely retuse, lateral veins 3-5, divaricate near margins; capsule ca. 8 mm in diam..   3 B. siamensis
+ Leaf apex acute to long acuminate, lateral veins 4-12; capsule 12-15 mm in diam   (2)
2 (1) Leaf blade abaxially greenish when dry, margin entire or undulate, sometimes with 1 shallow lobe on one side, lateral veins sparsely pubescent.   4 B. jatrophifolia
+ Leaf blade red-brown when dry, margin entire, lateral veins glabrous   (3)
3 (2) Male peduncle 2-8 cm; stamens ca. 15; ovary and capsule glabrous.   1 B. pentzii
+ Male peduncle 1-3.5 cm; stamens ca. 24; ovary and capsule pubescent.   2 B. andamanica

Lower Taxa


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