Plants 5–12 cm. Taproot stout, 5–23 cm. Stem shortened, plants usually acaulous. Basal petioles 1.5–5 cm, sheaths long, broad; blade oblong, 2–4 × 1–2 cm, pinnate; pinnae sessile, (3–) 4–6 pairs, remote; ultimate segments long-ovate to suborbicular, 5–10 × 3–8 mm, base subtruncate or rounded, entire or apex shallowly 1–3-toothed, sometimes 3–4-crenate; terminal pinnae obovate or orbicular, base cuneate, apex more deeply 3-lobed. Umbels usually sessile, 5–17 cm across; bracts 4–5, pinnate, leaf-like; rays 9–18, 2–8 cm, unequal, ribbed; bracteoles 3–7, linear, oblanceolate or long-obovate, entire, 3–5-lobed to pinnatisect, nearly equal to much longer than flowers. Calyx teeth minute, hidden under the spreading stylopodium. Petals obovate or orbicular, ca. 1.5 × 1 mm, white or greenish, apex obtuse. Fruit oblong-ellipsoid ca. 3.5 × 2 mm, ribs prominent. Fl. Jun–Aug, fr. Aug–Sep.
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