Plants 40–50 cm, polycarpic. Caudex branched. Stems several, dichotomously branched from base or above, solid, finely grooved, glabrous. Basal leaves numerous, petiolate; blade ovate-oblong or oblong, 4–10 × 2–4.5 cm, 2-pinnatisect; pinnae short-petiolulate; ultimate segments linear-filiform, 5–25 × 0.5–1.1 mm, glabrous, margins revolute, apex apiculate. Cauline leaves few, reduced above becoming subsessile, blade 3-parted, segments linear, elongate. Synflorescence paniculate, much-branched; umbels 1–2.5 cm across; bracts absent or 1–5, ovate, minute, margin scarious; rays 2–6, 4–14 mm, unequal, spreading, squarrose; bracteoles 6–10, ovate, triangular-lanceolate or lanceolate-subulate, ca. 2 × 0.5–1 mm, connate at base for half their length, abaxially puberulous; umbellules 6–12-flowered; pedicels 1.5–3 mm. Calyx teeth obsolete. Petals white or pale yellow, costa yellow-brown, abaxially pubescent. Stylopodium conic; styles reflexed. Fruit ovoid or ellipsoid, apex narrow, dorsally compressed, 6–7(–10) × 3–4(–6) mm, puberulous or sparsely pilose; vittae 1 in each furrow, 2 on commissure. Fl. Aug, fr. Sep.
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