Plants 5–20 cm. Root tuberous, short-cylindric, 5–10 × 3–5 mm. Stem solitary. Basal leaves petiolate, petioles 5–10 mm, sheaths small; blade broad-cordate, 0.5–1.6 × 1–2 cm, 3-foliolate; ultimate segments obovate, 4–8 × 4–12 mm, apex 3–5-crenate-dentate. Umbels 3.5–5 cm across; peduncles 2–5 cm; bracts and bracteoles absent; rays 3–6, 0.5–2.5 cm, unequal; umbellules 4–7 mm across, 3–7-flowered; pedicels 2–4 mm. Calyx teeth obsolete. Petals white or dark purple, ovate or rhombic-ovate, 1.5–2 × ca. 0.4 mm; base clawed; apex linear, 1.2–1.5 mm, glandular-pubescent. Young fruit ovoid or ovoid-orbicular, base slight-cordate, ca. 1 mm (mature fruit unknown). Fl. Aug–Sep, fr. Sep–Oct.
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