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FOC | Family List | FOC Vol. 11 | Euphorbiaceae

52. Jatropha Linnaeus, Sp. Pl. 2: 1006. 1753.

麻风树属 ma feng shu shu

Authors: Bingtao Li & Michael G. Gilbert

Trees, shrubs, subshrubs, or herbs. Stems with laticifers, latex clear, white, or reddish; indumentum simple, sometimes glandular. Stipules persistent or deciduous, entire or setiform, or a series of stalked glands. Leaves alternate, unlobed or palmately lobed or parted, usually with glands at apex of petiole; venation palmate [or pinnate]. Flowers monoecious or dioecious in paniculate dichasia. Male flowers: sepals 5, imbricate, slightly connate at base; petals 5, imbricate, free, sometimes coherent or connate at base; disk glands 5, free or connate into ring; stamens 8-12, sometimes more, in 2-6 series; filaments at least partly connate, sometimes inner filaments connate into a column; pistillode filamentous or absent. Female flowers: sepals 5(or 6), free, imbricate, usually persistent in fruits; disk annular, lobed, or dissected, sometimes with staminodes; ovary 2- or 3(or 4 or 5)-locular; ovules 1 per locule; styles unlobed or bifid, sometimes dilated. Fruits capsular. Seeds carunculate; episperm crustaceous; endosperm fleshy; cotyledon broad and flat.

About 175 species: most in the tropics and subtropics of America, ca. 70 species in Africa, widely introduced elsewhere; three species (introduced) in China.

1 Stipules scalelike, deciduous; inflorescences axillary, shorter than leaves; petals connate to middle, greenish yellow; leaves unlobed or shortly 3-5-lobed.   1 J. curcas
+ Stipules divided into spines or setae, persistent; inflorescences terminal, longer than leaves; petals free or almost so, red; leaves shortly lobed or very deeply divided   (2)
2 (1) Leaves peltate, entire or shortly 2-6-lobed; stipule lobes spinelike.   2 J. podagrica
+ Leaves not peltate, palmately deeply 9-11-lobed, lobes linear-lanceolate; stipule lobes divaricate, setiform.   3 J. multifida

Lower Taxa


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