Plants 40–60 cm. Taproot cylindrical, ca. 5 mm thick. Stem erect, grooved, angled, pubescent. Basal leaves petiolate; petioles 10–15 cm, pubescent; blade oblong-ovate, 7–9 × 5–7 cm, 2-pinnate; pinnae 5–6 pairs; ultimate segments lanceolate-ovate, 5–15 × 3–6 mm, veins hispid, margins serrate. Umbels 2.5–5 cm across; peduncles hirsute; bracts absent; rays 11–15, stout, subequal, 1.5–3 cm, hispid; bracteoles numerous, 2-pinnate, hispidulous, equal to or longer than pedicels; umbellules ca. 20-flowered. Calyx teeth linear, 1–2 mm. Petals white. Fruit ovoid, base rounded, apex constricted; dorsal ribs thickened, lateral ribs winged; vittae 3–4 in each furrow, 8 on commissure. Fl. Aug–Sep, fr. Oct.
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