Annual or perennial herbs or subshrubs. Leaves alternate, sessile, entire to dentate. Capitula terminal, solitary or in few-headed panicles, disciform; phyllaries narrow, in 3–7 series, the outermost shortest, the innermost often scarious; receptacle flat, epaleate. Outer florets many, female, filiform, distally toothed or lobed; central florets hermaphrodite, with 5 hairy or glandular lobes; anthers tailed proximally, appendiculate distally; style shortly bifid. Achenes cylindrical; pappus 1-seriate, of few barbellate bristles.
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