Description from Flora of China
Carum yunnanense Franchet, Bull. Soc. Philom. Paris, sér. 8, 6: 128. 1894; Pimpinella pseudocandolleana H. Wolff.
Plants perennial, 30–60 cm, sparsely hirsute, especially above. Root cylindrical, 10–15 cm. Stems solitary, rarely 2–3, slender, 2–3-branched. Basal petioles 2–10 cm; blade simple, cordate-lanceolate or narrowly triangulate, rarely cordate-ovate, 1.5–7 × 1–5 cm, base faintly cordate or truncate, margins serrate, apex acute. Cauline leaves few, usually 1-pinnate or 3-lobed, lobes lanceolate. Umbels 3–7 cm across; bracts 1–4, linear, or absent; rays 8–20, 2–5 cm, unequal, pubescent; bracteoles 1–10, 1.5–4 mm, ca. equal to or shorter than pedicels; umbellules 7–12 mm across, 10–15-flowered; pedicels 1–5 mm, very unequal. Calyx teeth obsolete. Petals white, obovate or obcordate, apex with incurved lobule. Stylopodium conic; styles 1–1.5 × stylopodium, reflexed. Fruit ovoid, ca. 2 × 1.7 mm, base cordate, surface sparsely pubescent with short papillae; vittae 1–3 in each furrow, 2–4 on commissure. Seed face plane. Fl. May–Jul, fr. Aug–Oct.
This species has reputed medicinal value. See the taxonomic note under Pimpinella candolleana.
Valley forests, scrub by streams, alpine meadows; 1400–3200 m. SW Sichuan, N and S Yunnan.