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109. Crassocephalum Moench, Methodus. 516. 1794.
野茼蒿属 ye tong hao shu
Authors: Yilin Chen, Bertil Nordenstam & Charles Jeffrey
Herbs, annual or perennial. Leaves alternate. Capitula discoid or rarely radiate, often pendulous by anthesis, when discoid homogamous; florets numerous, bisexual. Involucre cylindric, calyculate; phyllaries uniseriate, subequal, linear-lanceolate, with narrow scarious margins, erect at anthesis, later spreading and reflexed; receptacle flat, glabrous, areolate. Corolla finely tubular, upper part gradually expanded into a short limb; lobes 5. Anthers obtuse or auriculate at base. Style branches slender, papillose, with a short to long appendage of fused papillae. Achenes narrowly cylindric, ribbed, with gray-white ring at apex. Pappus hairs fine, numerous, white, early deciduous.
About 21 species: mainly in tropical Africa; two species (both introduced) in China.
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Capitula several to numerous in terminal corymbiform cymes, shortly pedunculate; corollas dull orange to brick red. |
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1 C. crepidioides |
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Capitula 1-8, solitary on long peduncles; corollas blue, purple, or magenta, rarely pink or red. |
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2 C. rubens |
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Lower Taxa
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