Description from Flora of China
Carum dolichopodum Diels, Notes Roy. Bot. Gard. Edinburgh 5: 287. 1912.
Plants 8–15 cm. Rootstock slender, horizontal, 5–20 × 0.2–0.5 cm. Stem solitary, purplish, usually unbranched. Basal petioles 3–6 cm, sheaths ovate, purplish; blade triangular in outline, 3–6 × 2–3 cm, 2–3-pinnate; pinnae 3–5 pairs, basal pinnae petiolate; ultimate segments ovate, 10–15 × 5–8 mm, margins 3-lobed or pinnatifid. Umbels 4–7 cm across, sometimes subtended by a reduced, 3-lobed leaf; bracts absent; rays 4–6, 4–5 cm, stout; bracteoles 2–6, linear-oblanceolate or obovate in outline, 4–7 mm, apex usually 2–3-lobed, or pinnatifid, rarely entire; umbellules 10–18 mm across, 10–15-flowered; pedicels 4–8 mm. Calyx teeth conspicuous, triangular-lanceolate, ca. 0.5 mm. Petals white or purplish, apex obtuse. Young fruit oblong-ovoid, ca. 2 × 1.5 mm (mature fruit unknown); vittae 3 in each furrow, 6 on commissure. Fl. and fr. Jul–Sep.
This species has reputed medicinal value. The long rhizome, leaf morphology, and divided bracteoles are rather uncharacteristic of Sinocarum, and this species may be better placed elsewhere.
Alpine meadows, rocks; 3000–4000 m. W Sichuan, NW Yunnan.