Perennial herb (in ours). Leaves alternate, entire, toothed or pinnatifid. Capitula solitary at apex of stem and branches, radiate; ray florets female, rarely neuter; disk florets mostly bisexual. Receptacle with scales. Phyllaries in 1 row. Rays yellow to orange or white on both sides or white above and variously coloured beneath. Achenes of 2 types:; those of the ray florets smooth, rugose or tuberculate, rarely winged; those of the disk florets laterally flattened, smooth and winged; pappus 0.