Plants 30–40 cm. Stem slender, slightly flexuose, corymbose-branched, lower branches alternate, upper branches opposite. Leaves triangular-ovate in outline, 3-pinnate/pinnatisect; ultimate segments gray-green, oblong-lanceolate or ovate, 5–10 mm, densely pubescent on both surfaces, deciduous. Cauline leaves few, less divided than basal, uppermost often bladeless, petioles wholly sheathing, sheaths oblong-lanceolate, pubescent. Terminal umbel pedunculate, lateral umbels 1–2, exceeding terminal; umbels 3–6 cm across; bracts absent; rays (2–)4–5(–8), subequal; bracteoles few, lanceolate, scarious-margined; umbellules ca. 10-flowered. Petals glabrous. Stylopodium low-conic, base dilated, lobed. Fruit oblong-ellipsoid, 8–14 × 3.5–6 mm; vittae 1 in each furrow, large, 2 on commissure. Fl. Jun, fr. Jul.