Annual or perennial herbs. Leaves sessile, pinnately veined. Capitula discoid, pedunculate, calyculate; involucral bracts free. Florets: corolla limbs yellow, orange, red, purplish, white or greenish; anthers ecaudate; style branches ±erect, truncate, without crown of papillae, with terminal appendage long, tapering. Achenes homomorphic, narrowly obloid. Pappus ?caducous.