Plants 5–20 cm. Root tuberous, short-cylindric, 5–10 × 3–5 mm. Stem solitary. Basal leaves petiolate, petioles 5–10 mm, sheaths small; blade broad-cordate, 0.5–1.6 × 1–2 cm, 3-foliolate; ultimate segments obovate, 4–8 × 4–12 mm, apex 3–5-crenate-dentate. Umbels 3.5–5 cm across; peduncles 2–5 cm; bracts and bracteoles absent; rays 3–6, 0.5–2.5 cm, unequal; umbellules 4–7 mm across, 3–7-flowered; pedicels 2–4 mm. Calyx teeth obsolete. Petals white or dark purple, ovate or rhombic-ovate, 1.5–2 × ca. 0.4 mm; base clawed; apex linear, 1.2–1.5 mm, glandular-pubescent. Young fruit ovoid or ovoid-orbicular, base slight-cordate, ca. 1 mm (mature fruit unknown). Fl. Aug–Sep, fr. Sep–Oct.
Records in the literature of this species occurring further west in the Himalayas remain unconfirmed and are here considered dubious.
Sichuan, Xizang, Yunnan.
Damp forests; 3200–4100 m.