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Dinghushan | Family List | Euphorbiaceae | Jatropha

Jatropha curcas L.


Description from Flora of China

Manihot curcas (Linnaeus) Crantz.

Shrubs or treelets, 2-5 m tall, with watery latex; bark smooth; branches glaucous-gray, glabrous, sparsely lenticellate, pith larger. Stipules small; petioles 6-18 cm; leaf blade rotund to ovate, 7-18 × 6-16 cm, papery, nitid green and glabrous adaxially, gray-green and along nerves puberulent to glabrous abaxially, base cordate, apex acute; palmate veins 5-7. Inflorescences axillary, 6-10 cm; bracts lanceolate, 4-8 mm. Male flowers: sepals 5, ca. 4 mm, connate at base; petals oblong, green-yellow, ca. 6 mm, connate to middle, hairy inside; disk glands 5, nearly terete; stamens 10; outer 5 filaments free, inner filaments connate in lower part. Female flowers: pedicels elongate; sepals free, ca. 6 mm; petals and disk glands as in male; ovary 3-locular, glabrous; styles bifid at apex. Capsules ellipsoidal or globose, 2.5-3 cm, yellow. Seeds ellipsoidal, 1.5-2 cm, black. Fl. Sep-Oct, fr. Oct-Dec.

Jatropha curcas seeds are the source of curcas oil, a very powerful purgative, also used for making candles and soap, for lighting, and as a lubricant. There is interest in the oil as a biofuel crop for areas too dry for normal crops. The bark is used as medicine for lepriasis (leprosy), itchy skin, eczema, chronic ulcers, etc.

Cultivated for medicine. Fujian, Guangdong, Guangxi, Hainan, Sichuan, Taiwan, Yunnan [native to tropical America; widely introduced].

生活型: 乔木, 灌木

栽培植物: 栽培

特征: 落叶灌木或小乔木;叶近圆形、掌状脉,柄长,折断流出液汁,用口轻吹起皂泡;种子干后变黑色

花期: 3--5

果期: 秋月

生境: 见于水坑村旁,栽培

用途: 有毒树木(尤其种子!)种子泻下,可作催泻剂(但有剧毒,多食可致命,用时宜慎!);根可治跌打骨折、疥癣、顽疮;种子油可制皂及润滑油,油粕可作农药和肥料

门中名: 种子植物门

亚门中名: 被子植物亚门

纲中名: 双子叶植物纲

中文别名: 麻疯树


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