Annual herbs. Leaves alternate,
lyrate-pinnatifid or serrate. Capitula in terminal panicles,
heterogamous, disciform; outer florets
female; disk florets bisexual. Phyllaries 1-2-seriate; margin
membranous. Corolla greenish, yellowish-white or purplish,
typically 2-coloured in one capitulum; corolla of disk
florets campanulate, lobes not rotate and spreading. Achenes
flattened-obovoid. Pappus 0 or of a solitary short seta, or
of minute papillose protuberances, or a narrow rim. Worldwide: 4 species in the tropics of the Old World Zimbabwe: 1 taxon. |
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