Description from Flora of China
Hymenidium foetens (Franchet) Pimenov & Kljuykov; Pleurospermum dielsianum Fedde ex H. Wolff, p.p.
Plants dwarf, 8–40 cm high, with characteristic strong unpleasant odor. Rootstock stout, vertical. Stem reduced, ribbed, scabrous, to 1.5 cm thick at base. Basal and lower petioles 3–6 cm, flattened, winged, sheaths narrow to broad, oblong; blades oblong, 3–6 × 1–3 cm, 3–4-ternate-pinnate; pinnae 4–6 pairs, subsessile; ultimate segments linear or lanceolate, 1–3 × 0.5–1.5 mm, hirtellous along veins and margins, apex entire, rarely 2–3-lobed. Primary umbels 10–15 cm across; peduncle 3–5 cm, scabrous; bracts 6–8, obovate, 3–6 cm, apex pinnate; rays 14–30, 3–9 cm, unequal, hispidulous; bracteoles ca. 10, obovate, 1–2 × 0.5–1 cm, apex pinnate-pinnatifid, pale green, margin broad, white, membranous; pedicels numerous, 0.4–1 cm, flattened, winged. Calyx teeth minute, triangular. Petals obovate, white or pinkish, ca. 2 mm, acute, clawed at base. Anthers purple-black, filaments white. Stylopodium short-conic. Fruit ovoid, purple-black, dark red-brown, 7–9 × 3–4 mm; ribs all broadly-sinuate-winged; vittae 1 in each furrow, 2 on commissure. Fl. Jun–Sep, fr. Jul–Sep.
Open alpine meadows, rocky slopes, loose screes; 3600–4500 m. Gansu, Sichuan, SE Xizang, NW Yunnan.