Description:
Annual or short-lived perennial herbs. Leaves opposite, crenate-serrate. Capitula radiate, glomerate or sometimes solitary. Involucral bracts few, in a single row. Receptacle with small, narrow paleae. Florets : rays female, yellow; disc florets 4-lobed, yellow. Anthers : appendages truncate to obtuse. Cypselas : ray cypselas elliptic, dorsiventrally compressed, with deeply lobate wings; disc cypselas clavate, tuberculate. Pappus in ray florets of 2 awns, connate to the wing; in disc florets of 2 or 3(4) awns.
Distribution:
Monotypic: *Synedrella nodiflora Gaertn., tropical America, naturalised throughout tropics; sthn trop. Afr. Angola, Malawi.
Source:
SSTA
Classification:
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