Annual to perennial herbs. Leaves sessile, pinnately veined. Capitula discoid (in Australia) or radiate, pedunculate, ecalyculate; involucral bracts free. Florets: corolla limbs pink, red, sometimes yellow; anthers ecaudate; style branches truncate to obtuse, crowned with papillae, with or without terminal appendage. Achenes homomorphic, narrowly obloid. Pappus caducous.