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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.
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1 |
Stipules scalelike, deciduous; inflorescences axillary, shorter than leaves; petals connate to middle, greenish yellow; leaves unlobed or shortly 3-5-lobed. |
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1 J. curcas |
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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 |
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(2) |
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2 (1) |
Leaves peltate, entire or shortly 2-6-lobed; stipule lobes spinelike. |
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2 J. podagrica |
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Leaves not peltate, palmately deeply 9-11-lobed, lobes linear-lanceolate; stipule lobes divaricate, setiform. |
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3 J. multifida |
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Lower Taxa
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