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Blainvillea Cass.

百能葳属

Description from Flora of China

Herbs, annual or perennial. Leaves opposite or alternate in upper part, petiolate, margin serrate. Capitula small, terminal or axillary, slender and long pedunculate; involucre ovoid, ovoid-campanulate, or hemispheric; phyllaries few, outer papery; receptacle convex; paleae rigid and dry membranous. Ray florets female, 1- or 2-seriate, lamina light yellow, yellow, or rarely white, short or very short, apex 2-4-dentate. Disk florets tubular, limbs 5-dentate. Anther tails obtuse, entire or inconspicuously auriculate. Achenes glabrous or pubescent, apex truncate, of female florets 3-ribbed, dorsally compressed, of bisexual florets 3- or 4-ribbed, or laterally compressed; pappus 2-5, unequal, spinelike or squamalike, base connate.

About ten species: tropics; one species in China.


 

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