Description from Flora of China
Herbs, perennial. Caudex stout, woody, digitally branched. Stem angled, fluted, base usually clothed in fibrous remnant sheaths. Basal leaves numerous, sheaths scarious-margined; blade 2–3-pinnatisect; ultimate segments narrow. Umbels compound, terminal; bracts and bracteoles several to numerous, sometimes deciduous. Calyx teeth lanceolate or linear. Petals white to purplish tinged, obovate, emarginate, base clawed, apex narrow, inflexed. Stylopodium low-conic; styles erect when young, reflexed in fruit. Fruit oblong or ellipsoid, strongly dorsally compressed; dorsal ribs rounded, very prominent, lateral ribs broadly corky-winged; pericarp thickened and corky; vittae 1 in each furrow, 2 on commissure (Chinese species), sometimes obsolete. Seed face plane. Carpophore 2-cleft to base.
Two to four species: China, Korea, Mongolia, Russia; two species in China.
(Authors: She Menglan (佘孟兰 Sheh Meng-lan); Mark F. Watson)