Ligusticum yunnanense Pu Fating

Plants 40–60 cm, pilose throughout. Stem erect, 1–2-branched. Lower leaves petiolate, sheathing; blade subtriangular, 10–15 × 8–12 cm, ternate-2–3-pinnate, primary pinnae 5–6 pairs; ultimate segments lanceolate, 5–15 × 2–5 mm. Upper leaves reduced, 1-pinnate. Umbels terminal and lateral, terminal umbels 3–5–5 cm across; peduncles 8–10 cm; bracts 2–5, 1–2-pinnate; rays 15–20, subequal, ca. 4 cm; bracteoles 5–6, 1-pinnate, nearly as long as umbellules. Calyx teeth obsolete. Petals white, obovate, base cuneate. Styles ca. equaling stylopodium. Fruit oblong-ovoid, ca. 4 × 2.5–3 mm; dorsal and intermediate ribs prominent, filiform, lateral ribs narrowly winged; vittae 2–3 in each furrow, 4 on commissure. Seed face plane. Fl. and fr. Jul–Sep.

Grassy slopes. Yunnan.