西藏藁本 xi zang gao ben

Plants 15–25 cm, pubescent throughout. Taproot thick, branched. Stems multicipital, purplish and striate, base clothed with fibrous remnant sheaths. Basal leaves numerous, short petiolate; sheaths purplish; blade narrow-oblong, 3.5–6 × 1.5–3 cm, 1–2-pinnate; pinnae 2–4 pairs, ovate to broad-ovate, 4–8 × 3–6 mm, margins pinnatifid. Cauline leaves 1–2, similar to basal, smaller. Umbels terminal, 2–3 cm across; peduncles stout, 6–10 cm; bracts 1–2, linear, 1.5–2.5 cm, rarely 2–3-lobed at the apex; rays 15–25, slightly unequal, 1.2–2 cm; bracteoles 10–12, linear, margin not membranous; umbellules 20–30-flowered. Calyx teeth conspicuous, subulate unequal. Petals white, obovate, base shortly clawed. Styles ca. 2–3 × stylopodium, reflexed. Fruit oblong-ovoid, 3–4 × 2.5–3 mm; dorsal and intermediate ribs filiform, lateral ribs narrowly winged; vittae 3 in each furrow, 5–6 on commissure. Fl. and fr. Aug–Oct.

Alpine meadows; ca. 4500 m. SE Xizang (Nyingchi).