粗茎棱子芹 cu jing leng zi qin

Hymenidium wilsonii (H. de Boissieu) Pimenov & Kljuykov; Physospermopsis lalabhduriana Farille & S. B. Malla; Pleurospermum cnidiifolium H. Wolff; P. crassicaule H. Wolff; P. lecomteanum H. Wolff; P. tanacetifolium H. Wolff; P. thalictrifolium H. Wolff

Plants 10–40 cm. Root brown, long-conic. Stem purplish-tinged, ribbed, fibrous remnant sheaths at base. Basal and lower petioles 3–5 cm, flattened, winged, sheaths narrow-oblong; blades oblong-lanceolate, 3–15 cm, 2–3-ternate-pinnate; pinnae 5–9 pairs, basal pinnae petiolulate; ultimate segments narrow-ovate or lanceolate, 3–5 × 1.5–2 mm, entire or 2–3-lobed. Leaves reduced upwards, petioles becoming wholly sheathing. Umbels 4–6 cm across; peduncle 3–4 cm; bracts 5–8, leaf-like, 1.5–4 cm, apex 2-pinnate, margin broadly white-membranous; rays 7–15, 2–5 cm, subequal; bracteoles 5–8, broad-ovate, 7–11 mm, similar to bracts; pedicels numerous, 2–4 mm. Calyx teeth small, triangular-ovate, ca. 0.3 mm. Petals white, yellowish-green or purplish, ca. 1.5 mm. Anthers purple-red. Fruit oblong-ovoid, ca. 3 × 2 mm, dark purple; ribs all broadly crisped-winged; vittae 1–2 in each furrow, 2 on commissure. Fl. and fr. Aug–Oct.

High-altitude open grasslands; 3000–4500 m. S Gansu, SE Qinghai, W Sichuan, E Xizang, NW Yunnan [Nepal].