Source:
SSA
Description:
Annual herbs with branches striate and sparsely pilose. Leaves alternate, shortly petiolate, ovate or lanceolate, entire or remotely toothed, strigose beneath. Capitula radiate, solitary, peduncled, terminal. Involucre campanulate; bracts in 1 row, leafy. Receptacle small; paleae cymbiform, clasping florets, becoming contracted above cypsela into +/- tubular neck. Ray florets neuter; corolla yellow; tube longer than lamina, sparsely glandular-hairy; lamina obovate, shortly bilobed. Style 0. Disc florets bisexual, fertile; corolla yellow, tubular, slightly widening upwards, 5-lobed; lobes small, linear, sparsely pilose on back. Anthers rounded or pointed at base, with linear appendage. Cypselas obovate, sometimes oblique above. Pappus annular or 0. x = 6, 11 (7, 9, 13) (polyploidy).
Distribution:
Species 8, in Central America, Mexico and Africa; 1 in sthn Afr.: Sclerocarpus africanus Jacq. ex Murr., northern parts of Namibia and Botswana.
Classification:
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