Perennial herbs or shrubs. Lvs simple, palmately toothed or lobed, alternate. Capitula solitary or in corymbs or panicles; involucral bracts in 1 row; supplementary bracts usually 0, sometimes few and short. Receptacle ± flat; scales 0. Outer florets ♀ and ligulate; ligules white, or shades of red, blue or purple; inner florets ☿. Achenes subcylindric, slightly compressed, with c. 10 prominent ribs, dimorphic, those of ray achenes larger, glabrous and often lacking a pappus, those of disc achenes hairy and with a pappus.
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