Plants perennial, 30–70 cm, sparsely pubescent. Root fusiform, ca. 5 × 0.4 cm. Stems solitary, rarely 2–3. Basal and lower leaves simple, cordate-ovate, (1–)2–5 × 1–3 cm, both surfaces pubescent, margins coarsely serrate. Upper leaves smaller, sessile, 1-pinnate or 3-lobed, lobes lanceolate. Umbels 2–5 cm across; bracts 1–2, linear, 4–8 mm, or absent; rays (8–)15–20, 2–4(–6) cm, unequal, pubescent; bracteoles 1–3, linear, 1.5–3 mm, shorter than pedicels, glabrous; umbellules ca. 8 mm across, 15–25-flowered; pedicels 0.7–3 mm, unequal. Calyx teeth obsolete. Petals white, obcordate, base cuneate, apex notched with incurved lobule, abaxially hairy. Stylopodium conic; styles 1–1.5 × stylopodium, spreading. Fruit ovoid, ca. 1.5 × 1 mm, base cordate, surface densely papillose-rugose; vittae 1–3 in each furrow, 2–4 on commissure. Seed face plane. Fl. May–Aug, fr. Aug–Nov.
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