《Flora of China》|| Apiaceae || Trachydium ||密瘤瘤果芹 Trachydium subnudum

3. Trachydium subnudum C. B. Clarke ex H. Wolff, Repert. Spec. Nov. Regni Veg. 27: 125. 1929.

密瘤瘤果芹 mi liu liu guo qin

Chamaesciadium subnudum (C. B. Clarke ex H. Wolff) C. Norman; Trachydium verrucosum R. H. Shan & F. T. Pu.

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.

Alpine meadows; 3000–4500(–5000) m. SW Sichuan, S Xizang [NE India].