Description from Flora of China
Euryangium Kauffmann; Sumbulus H. Reinsch.
Herbs, perennial, monocarpic or polycarpic, often onion-(Allium)-scented. Taproot stout, often woody. Stem branching, alternate, opposite or verticillate, base often clothed in fibrous remnant sheaths. Leaves petiolate, base sheathing, usually broadly so; blade 2–4-pinnate or 2–4-pinnatisect. Cauline leaves reduced upwards. Inflorescences often polygamous, terminal umbels compound, flowers perfect; lateral umbels both compound and simple, flowers bisexual or staminate; bracts usually absent; bracteoles present or absent. Calyx teeth obsolete or minute, triangular (except F. kingdon-wardii). Petals yellow or pale yellow (rarely greenish-yellow), ovate or lanceolate-oblong, apex acuminate, inflexed. Stylopodium conic, base sometimes dilated, lobed. Fruit ellipsoid or ovate-globose, strongly dorsally compressed, glabrous (rarely sparsely puberulent); dorsal ribs filiform, usually prominent, lateral ribs winged, wings narrow or broad; vittae 1–4 in each furrow, 2–12 on commissure. Seed face plane or slightly concave. Carpophore 2-cleft to base.
About 150 species: N Africa, C and SW Asia, Mediterranean region; 26 species (seven endemic) in China.
(Authors: She Menglan (佘孟兰 Sheh Meng-lan); Mark F. Watson)