Description from Flora of China
Herbs, perennial. Rootstock tuberous. Leaves 3–4-pinnate; ultimate segments linear. Umbels compound, terminal and lateral; bracts and bracteoles present, filiform. Calyx teeth obsolete. Petals white, obovate, median vein dark, apex notched, incurved. Stylopodium conic; styles short, reflexed. Fruit oblong-ellipsoid, slightly dorsally compressed, smooth; ribs 5, dorsal ribs slightly prominent, lateral ribs obsolete; vittae 1, transverse-slit, in each furrow, 2 on commissure. Seed face deeply concave to plane. Carpophore 2-cleft at apex.
About 22 species: C and SW Asia, E Mediterranean region, mainly in Russia; one species in China.
(Authors: Pan Zehui (潘泽惠); Mark F. Watson)