Plants annual, 30–45 cm, glabrous. Taproot slender. Stem solitary, much-branched, slender. Lower petioles 1–2 cm; blade 1–2-pinnate, pinnae 3–4 pairs; ultimate segments ovate-lanceolate, 10–35 × 5–20 mm. Upper leaves 3-lobed, lobes lanceolate. Umbels numerous, 3–5 cm across, very lax; bracts 1 or absent, linear, ca. 3 mm; rays 2–3, 0.4–1.8 cm, unequal, slender, divergent; bracteoles absent; umbellules ca. 5 mm across, 3–4-flowered; pedicels 1–3 mm, to 8 mm in fruit. Calyx teeth obsolete. Petals white, obcordate, apex with small incurved lobule. Stylopodium low-conic; styles ca. equal to stylopodium, spreading. Fruit ovoid, ca. 2 × 1.5 mm, base cordate, surface glabrous, usually only one mericarp matures; vittae 3 in each furrow, 4 on commissure. Seed face plane. Fl. and fr. Jun–Aug.

This poorly known taxon is recorded only from a few collections. The illustration in FRPS (55(2): 87. 1985) does not agree with the type of this species (Forrest 14885) and is something different.

Shaded areas among shrubs; ca. 2000 m. SW Guizhou (Xingyi), NW Yunnan (Dêqên, Weixi).