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FOC | Family List | FOC Vol. 17 | Solanaceae

17. Datura Linnaeus, Sp. Pl. 1: 179. 1753.

曼陀罗属 man tuo luo shu

Shrubs or annual or perennial herbs; pubescence of simple sometimes glandular hairs. Leaves petiolate; leaf blade simple, entire or sinuate-dentate. Inflorescences solitary flowers in leaf axils or in branch forks; peduncle, bracts, and bracteoles absent. Flowers actinomorphic, large. Pedicel often stout. Calyx long tubular or cylindric, often circumscissile near base. Corolla elongated, funnelform; lobes sometimes cuspidate. Anthers mostly elongated, dehiscing longitudinally, included. Ovary 2-4-locular. Fruit a dry capsule, 4-valved or irregularly dehiscent, prickly or unarmed, often subtended by remnants of persistent calyx. Seeds numerous, laterally compressed; embryo curved.

About 11 species: North and South America, three species in China.

1 Fruit erect, regularly 4-valved; calyx tube 5-angular; corolla less than 11 cm; seeds black; anthers less than 5 mm   1 Datura stramonium
+ Fruit horizontal or pendulous, irregularly 4-valved; calyx tube cylindric; corolla more than 11 cm; seeds brown; anthers more than 7 mm.   (2)
2 (1) Plants glandular pubescent; capsules densely gray-white pubescent with slender prickles   2 Datura inoxia
+ Plants glabrescent; capsules tuberculate or with stout-based prickles   3 Datura metel

Lower Taxa


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