Plants 30–80 cm. Rootstock elongate, woody, digitately branched, gray-brown. Stems numerous, rigid, glabrous, without fibrous collar. Basal leaves numerous; blade ovate-oblong, ternate-2-pinnate; pinnae 2–3 pairs; ultimate segments ovate or ovate-orbicular, 2–3-lobed, 1–4 × 0.6–3 cm, both surfaces glabrous, adaxially shiny, irregularly apiculate-serrate. Synflorescence branched; peduncles brown-tomentose; umbels 3–7 cm across; bracts absent or 1 deciduous, linear, membranous; rays 7–13, 4-angled, brown-tomentose on inner faces, glabrous on outside; bracteoles 3–5, linear-lanceolate, unequal, shorter than flowers. Calyx teeth subulate. Petals white, midvein yellowish, abaxially pubescent. Fruit narrowly ellipsoid, 4–5 × 2–2.5 mm, tomentose when young, becoming glabrescent; dorsal ribs somewhat prominent, lateral ribs narrowly winged, wings ca. 1/3 width of body, thin; vittae 3–4 in each furrow, 6–10 on commissure. Fl. Sep–Oct, fr. Oct–Dec.
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