Annual, biennial or perennial herbs, branching. Hairs simple, non-glandular. Leaves predominantly cauline, rigid, spiny, decurrent down stems as green spiny wings. Inflorescences of 1 or few capitula. Capitula sessile or sub-sessile; involucral bracts multiseriate; inner bracts not hardened, ± erect at maturity; paleae broadly oblong-elliptic or ovate in profile, obtuse to rounded, broadly winged, enclosing and falling with achene. Florets: ligule golden-yellow. Achenes homomorphic, strongly compressed, unbeaked. Pappus homomorphic, of minute scales and sometimes bristles, with bristles not persistent; bristles scabrid-barbellate, uniform within pappus.
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