Bupleurum alatum Shan & M. L. Sheh

This rather poorly known species is recorded only from a few localities. It is similar to Bupleurum stewartianum Nasir, from Pakistan, but differs in having fewer and longer rays, and fruit with broader wings.

Plants ca. 20 cm, perennial. Root slender, pale brown, little-branched. Stems several, slender, erect, base without fibrous remnant sheath. Lower leaves sessile, clasping; blade oblong-lanceolate, ca. 20 × 2.5 mm, nerves 11–13, apex acuminate. Middle leaves elliptic-lanceolate, apex obtuse-acute. Umbels 2–5 cm across, lax; bracts 2–3, elliptic, 7–10 × 1.8–3 mm, 5–7-nerved, apex acute or acuminate; rays of terminal umbel 3, 2–5 cm, unequal, rays of lateral and lower umbels 1–2, ca. 2 cm; bracteoles 3–5, linear-lanceolate, 4–5 × 1.2–1.5 mm, shorter than umbellules in fruit; umbellules 3–8 mm across, (4–)8–10-flowered; pedicels 1–2.5 mm. Petals yellow. Stylopodium low-conic, dark yellow. Fruit oblong, ca. 5 × 2 mm; ribs all broadly winged, equal; vittae 1 in each furrow, 2 on commissure. Fl. and fr. Aug–Sep.

S Xizang (Nyalam).

Mountain slopes; ca. 3900 m.