Plants 60–90 cm, perennial, scabrous or shortly hirtellous throughout. Basal leaves petiolate, petioles 1–2.5 cm, sheaths short; blade 2–2.5 cm, pinnate; pinnae 3–5, ovate or obovate, 5–15 × 2–12 mm, 3-parted or apex 3-lobed, base cuneate, margin entire or sparingly dentate. Leaves reduced upwards, becoming 3-parted, segments linear, entire or 1–2-serrate. Umbels 1.5–2 cm, numerous, leaf-opposed; peduncles 1–5 cm; bracts and bracteoles absent; rays 2–4, 5–13 mm; umbellule 3–7-flowered; pedicels 1–2 mm, very slender, elongating in fruit. Petals obovate, ca. 1 × 1 mm. Fruit broadly ovoid-acuminate, ca. 1.8 × 1.5 mm, densely white strigose. Fl. and fr. Aug–Sep.