Oncosiphon
Annual herbs, glabrous or pubescent. Leaves cauline, alternate, pinnatisect. Capitula radiate or discoid, solitary or in corymbs, pedunculate; involucral bracts 2- or 3-seriate, equal or unequal, herbaceous with scarious margins; receptacle flat to convex, naked, pitted. Ray florets female, ligulate, white, or often absent. Disc florets bisexual, tubular; corolla 4-lobed, yellow; anthers obtuse at base, with an ovate apical appendage; style with broad-linear, truncate branches, apices papillose. Cypselas more or less terete, 4-ribbed, yellow-brown; pappus a small crown, entire or toothed, shorter on adaxial side.
8 species from South Africa and Namibia; 2 species naturalised in Australia.
Jeanes, J.A. (1999). Asteraceae. In: Walsh, N.G.; Entwisle, T.J., Flora of Victoria Vol. 4, Cornaceae to Asteraceae, pp. 652–666. Inkata Press, Melbourne.
Spinning
