Tall annual or biennial herbs with a fleshy taproot, glabrous. Leaves 2–4-pinnate, lobes ovate to lanceolate, toothed to pinnatifid. Inflorescence a compound umbel; bracts and bracteoles ovate to lanceolate or linear; rays stiff. Flowers bisexual; sepals absent; petals obcordate, apex inflexed; nectary thick, flat; styles recurved. Fruit broad-ovoid to globose, slightly flattened laterally; mericarps 5-ribbed, ribs prominent and undulate and usually pale in colour, regions between ribs sometimes minutely ridged; carpophore persistent, divided nearly to base.
2 species, 1 South African, the other widespread in the Northern Hemisphere and widely naturalized.