Plants 25–75 cm. Rhizome stout, subglobose or torulose, ca. 8 mm, thick. Stem thinly ribbed. Basal leaves few, petioles 8.5–15 cm, sheaths short, narrow; blade 7.5–11 × 6–20 cm, 2–3-pinnate; basal pinnae short-petiolulate; ultimate segments li-near, 4.5–9 × 2–5 mm, entire, sometimes scabrous along nerves abaxially. Terminal umbels 4–13 cm across, lateral umbels smaller; peduncles, rays and pedicels scabrous distally; bracts and bracteoles absent; rays (5–)8–13, (1.5–)3–5.5 cm, unequal, elongating to 7 cm in fruit; umbellules 10–18 mm across, 5–10-flowered; pedicels 3–6 mm, unequal, scabrous on one side, elongating to 10 mm in fruit. Calyx teeth conspicuous, ovate-triangular, ca. 0.1 mm, apex acute. Petals purple-red, rarely white-pink, ovate-lanceolate, elongate-attenuate ca. 3 × 0.5 mm; apex linear, ca. half the petal length, papillate. Young fruit ovoid, ca. 1.5 × 1.5 mm (mature fruit unknown). Fl. Jul–Aug, fr. Sep–Oct.