Herbs perennial. Taproot branching, thickened, woody, crown densely covered in fibrous remnant sheaths. Stem much-branched, gray-green, glabrous. Leaves petiolate, articulate between the petiole and leaf blade; leaf blade ovate or broadly-ovate in outline, 3-pinnatisect, bluish-green; ultimate segments lanceolate or linear. Compound umbels terminal; bracts and bracteoles absent; umbellules few to many-flowered. Calyx teeth triangular, apex obtuse. Petals yellow. Stylopodium depressed, base dilated, erect in fruit; style short, recurved. Fruit ellipsoid, dorsally compressed, glabrous; ribs filiform, dorsal and intermediate ribs close together, lateral ribs remote; vittae 1 in each furrow, 2 on commissure, very small. Seed face plane or slightly convex. Carpophore parted to near base.

Some current authors consider this genus part of Ferula.

Two species: C Asia; one species in China.

(Authors: She Menglan (佘孟兰 Sheh Meng-lan); Mark F. Watson)