Leaves 2-3-pinnate, glabrous to pubescent; segments lanceolate, serrate to pinnatifid; leaf bases sheathing. Involucre of 1 or 2 bracts or lacking. Rays 10-15. Involucel of several bractlets. Calyx teeth obsolete. Petals white. Stylopodium conical; styles divaricate. _Fruit linear to oblong, tuberculate to bristly, rarely glabrate; ridges not prominent; vittae minute or obscure. Inner seed face sulcate.