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10. Aconitum Linnaeus, Sp. Pl. 1: 532. 1753; Gen. Pl. ed. 5, 236; 1754.
乌头属 wu tou shu
Li Liangqian; Yuichi Kadota
Herbs perennial or pseudoannual, rarely annual, with taproots or 2 to several caudices. Stem erect or twining. Leaves simple or compound, cauline ones alternate, sometimes all basal, palmately divided, rarely undivided. Inflorescence usually racemose. Pedicel with 2 bracteoles. Flowers bisexual, zygomorphic. Sepals 5, petaloid, purple, blue, or yellow; lower sepals 2, narrowly lanceolate or oblong, small; lateral sepals 2, suborbicular; upper sepal falcate, navicular, galeate to cylindric. Petals 2, clawed; limb usually with lip and spur, secretory tissue usually at limb apex, rarely abaxial. Staminodes usually absent. Stamens numerous; anthers ellipsoid-globose. Carpels 3--5(--13); style short, persistent.
About 400 species: temperate regions of the N hemisphere; 211 species (166 endemic) in China.
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| 1 |
Herbs annual, with taproots; sepals clawed; petaline lip flabellate (3. A. subgen. Gymnaconitum) |
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211 A. gymnandrum |
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Herbs perennial, with rhizomes or pseudoannual with caudices; sepals not or nearly clawless; petaline lip not flabellate. |
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(2) |
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| 2 (1) |
Herbs perennial, with rhizomes (1. A. subgen. Lycoctonum) |
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Key 2 |
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Herbs pseudoannual, with caudices (2. A. subgen. Aconitum) |
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Key 3 |
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List of Keys
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List of lower taxa
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Treatments in Other Floras @ www.efloras.org
Other Databases
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