中亚阿魏 zhong ya a wei

Ferula jaeschkeana var. parkeriana O. E. Schulz; Peucedanum jaeschkeanum (Vatke) Baillon.

Plants 1–2 m, monocarpic, not strongly scented. Stem solitary, thick, robust, reddish brown, paniculate-branched, lower branches alternate, upper branches verticillate. Basal leaves petiolate; blade broadly triangular in outline, 2-ternately dissected, glabrous adaxially, pubescent abaxially, soon wilting; segments broadly ovate, ternate-bipinnatisect, ultimate segments oblong or oblong-lanceolate, 10–15 × 4–5 cm, 2-pinnatisect, base decurrent, finely serrate, apex short-acuminate. Cauline leaves reduced upwards, sheaths ovate-lanceolate, embracing. Umbels 3–10 cm across; terminal umbels sessile or subsessile, lateral umbels long-pedunculate, exceeding terminal; rays (5–)10–20 (–25), unequal; bracts absent; umbellules 15–20-flowered. Petals long-elliptic, apex acuminate, incurved. Stylopodium low-conic, base dilated, margin undulate; styles elongate. Fruit ellipsoid, 14–20 × 8–12 mm; vittae 1 in each furrow, 4–6 on commissure. Fl. Jun, fr. Jul.

Grassy slopes, among shrubs; ca. 3600 m. W Xizang (Ngari, Zanda) [Afghanistan, Bhutan, NE India, W Pakistan; C Asia].