Description from Flora of China
Carum paniculatum Franchet, Bull. Soc. Philom. Paris, sér. 8, 6: 122. 1894; Pimpinella paniculata (Franchet) M. Hiroe.
Plants 30–80 cm. Root tuberous, oblong, 8–12 × ca. 5 mm. Stem purplish at base, ribbed. Basal leaves petiolate, petioles
3.5–6 cm, sheaths short, narrow; blade broad-ovate to broad-triangular, 2–3-pinnate; pinnae petiolules 1.5–3.5 cm, pinnule petiolules 0.5–1 cm; ultimate segments broad-ovate, 1.5–2.2 × 0.7–1.5 cm, margin irregularly coarse-toothed. Leaflets of the upper leaves linear. Umbels 2–3.5 cm across; peduncles 2–8 cm; bracts and bracteoles absent; rays 3–5, 1–2.5 cm,, unequal, extending to 5 cm in fruit; umbellules 4–7 mm across, 3–7-flowered; pedicels 2–3.5 mm, unequal. Calyx teeth obsolete. Petals white or margin purplish-red, ovate-lanceolate or narrow-lanceolate, 3–4 × ca. 0.5 mm; apex linear, 1–1.4 mm. Fruit broad-ovoid, ca. 1.8 × 2.1 mm, base cordate; vittae 3 in each furrow. Fl. Aug–Sep, fr. Oct.
Forests, grasslands; 2000–3800 m. SW Sichuan, NW Yunnan.