Plants 30–60 cm. Taproot ca. 1 cm thick. Stem sparsely hispid, especially lower parts. Basal leaf blades oblong, 10–30 × 3–5 cm, 3–4-pinnate; pinnae 6–7 pairs, oblong-ovate; ultimate segments linear, 6–13 × 0.5–1 mm, hispid, entire. Umbels 3–6 cm across; peduncles 3–8 cm; bracts 5–7, linear, 3–10 mm, unequal, hispid; rays 4–6, 1.5–3 cm, subequal; bracteoles 5–7, linear, 2–6 mm, unequal, hispid; pedicels 10–20, 3–5 mm, elongating to 10 mm in fruit. Petals white, glabrous. Ovary densely white hispid. Fruit subspherical, 4–7 × 6–10 mm, hispid when young, becoming smooth; ribs all inconspicuous. Fl. May, fr. Jun.
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