Annual or perennial herbs. Lvs mostly basal, simple, entire to serrate or crenate, reduced and alternate when present on peduncles. Capitula solitary and terminal, but appearing axillary from basal rosettes. Involucral bracts in 1-2 rows, herbaceous. Receptacle flat to conic; scales 0. Outer florets ♀, ligulate, in 1 row (more ligulate rows in cvs); ligules white, tinged pink, or purple. Inner florets ☿, tubular, numerous. Achenes all similar, obovoid, compressed, with 2 narrow ribs; pappus usually 0, rarely of a ring of short bristles.