Plants 5–10 cm. Stems 1–2, unbranched, glabrous. Basal leaves petiolate, petioles 2–6 cm; blade ovate-triangular, 8–20 × 9–18 mm, 1-pinnate; pinnae 2–4 pairs, broadly ovate, 2–6 × 2–6 mm, margins serrulate. Cauline leaves similar to basal. Umbels 0.5–1.1 cm across in flower, to 3.5 cm in fruit, terminal; bracts absent; rays 5–9, 3–25 mm, extremely unequal; bracteoles 1–2, 0.3–1.5 mm; umbellules (1–)2(–3)-flowered; pedicels to 1.3 mm. Calyx teeth minute, triangular, ca. 0.1 mm. Petals white or purplish-white, ca. 1 × 0.4 mm, apex acute. Stylopodium low-conic; styles ca. 0.15 mm, shorter than stylopodium, reflexed. Fruit ovoid, 1.5–2 × 0.75–0.9 mm; vittae not observed. Fl. and fr. Jun–Aug.
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