Plants 15–20 cm. Root tuberous, oblong, ca. 10 × 3–5 mm. Stem solitary, slender and ribbed. Basal leaves petiolate, petioles 2.5–3.5 cm, slender, sheaths short; blade broad-ovate, 1.5–2.5 × 1.5–2.5 cm, 1–2-ternate-pinnate; pinnae petiolulate; ultimate segments obovate or ovate, ca. 1 × 0.7 cm, base cuneate, margin irregularly pinnate or apex 3-lobed. Umbels 2.5–5 cm across; peduncles 2.5–4 cm, slender; bracts and bracteoles absent; rays 4–6, 1–3 cm, unequal; umbellules 5–10 mm across, 3–9-flowered; pedicels ca. 5 mm. Calyx teeth obsolete. Petals white, ovate or ovate-lanceolate, 2–2.5 × ca. 0.5 mm; apex linear, 1–1.5 mm. Young fruit broad-ovoid, base cordate, ca. 1.5 mm (mature fruit unknown). Fl. and fr. Jul–Aug.
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