Plants 10–30 cm. Stem glabrescent, slender. Basal leaves petiolate, petioles 4–6 cm, glabrous; blade triangular-ovate in outline, 2–5 × 2–4 cm, ternate; leaflets 3, ovate, 1–3 × 0.7–1.5 cm, lateral leaflets 2–3-lobed or undivided, glabrous, margins serrate. Cauline leaves usually 2. Umbels 1.5–2.5 cm across in flower, to 4 cm in fruit; bracts and bracteoles absent; rays (3–) 10–20, 1.5–3 cm; umbellules 2–4-flowered; pedicels 0.5–1 mm. Calyx teeth triangular, ca. equaling stylopodium. Petals white. Stylopodium low conic; styles short, less than 0.5 mm. Fruit ovoid, ca. 2.5 × 2 mm; ribs denticulate; vittae 1–3 in each furrow, 2–4 on commissure. Fl. Jun–Jul, fr. Aug–Sep.

This poorly known taxon is recorded only from a few collections.

Among mosses in Abies forests; 3400–3900 m. W Sichuan.