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Callistephus Cass.

翠菊属

Description from Flora of China

Callistemma Cassini.

Herbs, annual or biennial. Leaves alternate, cauline, margin serrate or lobed. Capitula large, radiate, solitary, terminal on stem and at branch ends. Involucre hemispheric; phyllaries 2- or 3-seriate, imbricate, outer series large, leaflike, inner shorter, scarious. Receptacles flat or subconvex, alveolate, short paleae sometimes present. Ray florets 1- or 2-seriate, lamina usually red-purple, entire or shallowly 2-toothed at apex; disk florets bisexual, numerous, yellow, limb campanulate, shallowly 5-lobed; anther base obtuse, entire; style branches flattened, appendages triangular-lanceolate. Achenes oblanceoloid, slightly compressed, strigillose, sparsely, minutely stipitate glandular, 2-ribbed, 1 vein per side. Pappus 3-seriate, outer of persistent, short scales, inner 2 of deciduous, long, barbellate bristles.

One species: China, Japan, Korea, also widely cultivated.

(Authors: Chen Yilin (陈艺林 Chen Yi-ling); Luc Brouillet)


 

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