Plants 1–2 m, monocarpic, not strongly scented. Stem solitary, thick, robust, reddish brown, paniculate-branched, lower branches alternate, upper branches verticillate. Basal leaves petiolate; blade broadly triangular in outline, 2-ternately dissected, glabrous adaxially, pubescent abaxially, soon wilting; segments broadly ovate, ternate-bipinnatisect, ultimate segments oblong or oblong-lanceolate, 10–15 × 4–5 cm, 2-pinnatisect, base decurrent, finely serrate, apex short-acuminate. Cauline leaves reduced upwards, sheaths ovate-lanceolate, embracing. Umbels 3–10 cm across; terminal umbels sessile or subsessile, lateral umbels long-pedunculate, exceeding terminal; rays (5–)10–20 (–25), unequal; bracts absent; umbellules 15–20-flowered. Petals long-elliptic, apex acuminate, incurved. Stylopodium low-conic, base dilated, margin undulate; styles elongate. Fruit ellipsoid, 14–20 × 8–12 mm; vittae 1 in each furrow, 4–6 on commissure. Fl. Jun, fr. Jul.
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A herb. It grows 1-2 m tall. It has one thick, robust stem. It is reddish brown and the lower branches are alternate while the upper branches are in rings. The leaves are broadly triangle shaped and divided. The leaves on the stems get smaller going upwards. The flowers are in groups 10 cm across. The fruit are narrowly oval and 14-20 mm long by 8-12 mm wide.