Plants 6–100 cm. Stem pubescent. Basal leaf blade ternate/1–2-pinnate broadly ovate, both surfaces glabrous; basal pinnules often 2–3-lobed or parted; middle pinnules 3-lobed or undivided, sessile, 6–7 × 3–4.5 cm, coarsely serrate; terminal pinnules broadly ovate, 6–7 × 6.5–8 cm, 3-parted, base broadly cuneate, decurrent. Upper stem leaves reduced above, 3-dissected, lobules 3-lobed or parted, sharply serrate. Umbels 8–15 cm across; peduncles stout, densely pubescent; bracts absent or few, linear-lanceolate, ca. 15 × 0.5–1 mm, puberulous; rays 15–34, unequal, 1–7 cm, densely pubescent; bracteoles 10–16, linear or lanceolate, unequal, abaxially puberulous; umbellules 14–26-flowered. Calyx teeth conspicuous, subulate. Petals white. Styles about twice as long as stylopodium. Fruit ellipsoid, ca. 5 × 3 mm, densely pubescent; vittae 3 in each furrow, 6–8 on commissure. Fl. and fr. Jul–Sep.
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