Annual to perennial herbs, prostrate to erect, branched, stems and leaves hispid. Indumentum with 2-, 3-. 4-, 5-and 6-hooked anchor hairs. Leaves simple, alternate, basal and cauline. Inflorescence of irregular cymose panicles. Capitula terminal, pedunculate; involucre of at least 2 distinct rows; outer involucral bracts in single row, cordate to broadly ovate; inner bracts in 1 or 2 rows, linear to lanceolate, with a threadlike, sometimes feathery apical appendage; receptacle naked, smooth (not Australia) or shallowly alveolate. Florets: ligule yellow. Achenes homomorphic (not Australia) or heteromorphic, rostrate. Pappus bristles in single row, pure white, not persistent; bristles of central achenes plumose, of marginal achenes plumose (not Australia) or scabrous.
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