Erect perennial herbs. Leaves alternate, sessile, pinnately veined. Capitula disciform, pedunculate, calyculate; involucral bracts free. Florets: outer florets with corolla zygomorphic (in Australia) with a rudimentary ligule; central florets functionally male (not in Australia) or bisexual, with corolla limbs yellow or tinged purple; anthers ecaudate; style branches erect, truncate or obtuse, crowned with papillae, without terminal appendage. Achenes homomorphic, narrowly obloid. Pappus caducous.
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