Herbs biennial or short lived perennial, glabrous. Taproot tuberous, fusiform, elongate or cylindrical. Stem usually branched above, base with or without papery remnant sheaths. Basal leaves petiolate, narrowly sheathing; blade 2–4-pinnate; ultimate segments linear or lanceolate. Stem leaves gradually reduced upward. Umbels compound, terminal. Calyx teeth obsolete, rarely present, narrowly triangular. Petals broadly obovate, white, rarely pinkish or purplish, midvein yellow or yellow-green, base cuneate, with an inflexed apex. Stylopodium conic; styles recurved. Fruit oblong-ellipsoid or oblong-ovoid, slightly laterally compressed, glabrous; ribs 5, filiform, prominent; vittae 1(–3) in each furrow, 2–4 on commissure. Seed face plane. Carpophore 2-parted.
"Fr oblong to elliptic, flattened laterally, glabrous, the ribs narrow but prominent; oil-tubes solitary in the intervals, 2 on the commissure; carpophore bifid to the base; umbels compound, terminal and lateral, pedunculate; bracts few and subulate, or none; rays several to many; bractlets few and minute, or none; umbellets small, with very unequal pedicels; sep none; pet white (pink); stylopodium low-conic; taprooted biennials or perennials, the lvs pinnately dissected into linear or filiform segments. 30, widespread."