Herbs perennial, glabrous. Taproot stout. Stems 1–3, striate, often purplish, more or less curved at nodes, little branched above, base clothed in fibrous remnant sheaths. Basal leaves petiolate, sheathing; diffusely 3–4-pinnate; ultimate segments linear or linear-lanceolate, entire. Synflorescence with a few branches; umbels compound, terminal and lateral; bracts absent or occasionally 1–4, linear; bracteoles several, linear or linear-subulate, ca. equaling pedicels. Calyx teeth obsolete. Petals white, obovate, base cuneate, apex retuse with a small incurved lobule. Stylopodium conic; styles 2 × stylopodium, reflexed. Fruit oblong-ellipsoid, slightly dorsally compressed; ribs prominent, nearly equal, very narrowly winged, hollow; vittae 1 in each furrow, 2 on commissure. Seed face plane, in ripe fruit seeds nearly free, easily separating from pericarp. Carpophore 2-cleft to base.

One species: China, Russia (Siberia); C Asia, SW Asia (Caucasus), Europe.

(Authors: Pu Fading (溥发鼎 Pu Fa-ting); Mark F. Watson)