Description from Flora of China
Herbs perennial. Stem terete, much branched, pubescent (especially around nodes). Leaves 2–3-pinnate, very finely divided. Umbels compound, terminal and lateral; bracts absent; rays numerous; bracteoles several, ovate-lanceolate, margin scarious. Flowers of the terminal umbels almost wholly bisexual, staminate flowers sometimes present in lateral umbels, outer petals of outer umbels often radiant. Calyx teeth minute, subulate or obsolete. Petals obovate. Stylopodium conic or depressed, entire or undulate; styles short, erect or recurved. Fruit ellipsoid-oblong, slightly flattened laterally, constricted at commissure; ribs 5, prominent, undulate; vittae 2–3 in each furrow, 4–6 on commissure. Seed face broadly sulcate. Carpophore bifid, cleft to near base.
One species: China, Japan, Mongolia, Russia (E Siberia).
(Authors: She Menglan (佘孟兰 Sheh Meng-lan); Mark F. Watson)