Heads many-fl., radiate; ray-fl. uniseriate, ligulate, neuter; disc-fl. tubular, hermaphrodite, 4-toothed. Recept. flattish, bearing a few filiform shreds. Inv. 2–3-seriate, the scales as long as the disc. Branches of the disc-style truncate. Ovaries of the ray-fl. abortive. Achenes of of disc fertile, wingless, glabrous, without pappus, longitudinally ribbed, crowned by a cylindrical nectary. Suffruticose or half herbaceous. Leaves alternate, lobed or pinnatifid, the lobes oblong or linear, entire, mucronate. Branches ending in one-headed peduncles. Rays white; disc yellow.