Annual or perennial, hirsute to glabrous, sometimes glandular-hairy. Stems erect, procumbent or ascendent, branched, often in a sympodial way. Leaves alternate along the stems, sometimes also in rosettes, roundish cordate to broadly cuneate, ternately divided, or entire, narrow-cuneate to subspathulate; petioles with sheaths. Umbels simple, terminal or opposite the leaves, sometimes in a corymbiform di-monochasium. Involucres linear. Calyx teeth minute, rarely subulate. Petals entire, imbricate in bud. Disk plane. Styles from the base filiform. Fruits laterally flattened, vittae 0; commissure narrow; mericarps with dorsal ribs, marginate, lateral ribs in the commissure, intermediate ribs arcuate, subprominulent. Carpophore persistent, undivided.
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