Trachydium subnudum C. B. Cl. ex H. Wolff

Plants 10–20(–30) cm. Stem often reduced, branched or not, plants almost rosette. Basal leaves petiolate; blade oblong-lanceolate, ternate-2-pinnate, to 7 × 2 cm; primary pinnae 4–5 pairs, remote; ultimate segments ovate or lanceolate, 3–5 × 1–4 mm, margins incised, both surfaces moderately hispid. Stem leaves reduced upwards, pinnate. Umbels 9–25 cm across, lax; bracts absent, or occasionally 1, linear; rays 5–7, purplish, long and spreading, 4–16 cm, unequal; umbellules 12–17 mm across; bracteoles 2–7(–15), linear, just shorter than flowers. Calyx teeth obsolete. Petals white, base cuneate. Fruit broadly ovoid, ca. 3 × 2 mm, ribs filiform, densely tuberculate especially on ribs; vittae 3 in each furrow, 6 on commissure. Seed face deeply concave. Fl. and fr. Jul–Sep.

SW Sichuan, S Xizang [NE India].

Alpine meadows; 3000–4500(–5000) m.