Description: Annual herbs.
Leaves alternate, toothed or lobed.
Inflorescence terminal, heads in a panicle or rarely solitary; heads small; involucral bracts herbaceous with fimbriated membranous margins, 1- or 2-seriate; receptacle hemispherical, naked. Ray florets absent. Outer disc florets female, tubular, minutely 3-toothed; inner disc florets few, bisexual, campanulate, 4–5-toothed. Anthers obtuse at the base, apical appendage minute. Style branches short, papillose.
Achenes compressed, glabrous; pappus absent or rarely 2 minute scales or bristles.
Distribution and occurrence: World: 13 species, Africa, Madagascar, Europe, Asia, Australia. Australia: 1 species (native).
Text by M. F. Porteners