Annual or perennial, low growing, usually scented, hairy herbs with alternate, sometimes opposite or rosulate pinnatifid or pinnatisect, rarely undivided leaves. Capitula small to mediocre, pedunculate, hetero- or homogamous, disciform, or discoid, rarely radiate, solitary terminal. Involucre biseriate, phyllaries subequal, scarious-margined. Receptacle flat to conical, without paleae. Outer florets or rays female, fertile, uni- to multiseriate, more numerous than the disc-florets, without or with a short, conical 2-4-toothed corolla. Disc-florets bisexual, shortly pedicellate, fertile or sterile, with a 4-toothed yellow tube. Anthers basally obtuse, entire, apically ovate-appendaged. Style branches obtuse or truncate, included. Cypselas, particularly outer ones, stipitate, dorsally compressed, winged or marginate, inner achenes 2-4-ribbed, epappose or shortly auriculiform.