Plants 15–40 cm. Root slender, brown. Stem branched above. Basal and lower petioles 4–15 cm; sheaths long, membranous; blade oblong, 2.5–8 × 1.5–3.5 cm, pinnate; pinnae 2–6 pairs, remote; ultimate segments ovate or broad-ovate, 0.8–2 × 0.7–1.7 cm, base truncate to broad-cuneate, apex 3–5-toothed or irregularly serrate; terminal pinnae broadly obovate or suborbicular, base cuneate, apex often 3-lobed. Umbels ca. 5 cm across; bracts 2–4, linear to linear-lanceolate, pinnate; rays 6–13, unequal, spreading, ribbed; bracteoles 2–5, linear, entire or 3-toothed, longer than flowers; pedicels many, 2.5–3 mm. Calyx teeth minute, hidden by stylopodium. Petals white or greenish, obovate or suborbicular, apex slightly incurved. Fruit oblong-ellipsoid, ca. 2.5 × 2 mm; ribs all prominent. Fl. and fr. Jul–Aug. n = 6*.
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