Plants perennial, 30–100 cm, pubescent throughout. Roots fibrous or fascicled. Stem solitary, branching above. Basal petioles 3–10(–20) cm including sheaths; blade ternate or 1-pinnate; leaflets 3–5, ovate or broad-ovate, 3–9 × 2–6 cm, rarely undivided, cordate, pubescent on both surfaces, especially along veins. Cauline leaves homomorphic with the basal, ternate; leaflets oblong-ovate or lanceolate, 10–20 × 5–10 mm. Umbels 2.5–11 cm across; bracts usually absent, sometimes 1–5, linear, often similar to reduced uppermost leaves; rays 9–25, 1–4 cm, unequal; bracteoles 1–4, linear, 2–4 mm, unequal, ca. equal to or shorter than pedicels; umbellules 5–13 mm across, 10–25-flowered, only the terminal umbels or only outer umbellules in lateral umbels with fertile flowers, lateral umbels with sterile flowers; pedicels 1–4 mm, unequal, extending to 11 mm in fruit. Calyx teeth obsolete. Petals white, tinged purple or dark purple, apex with incurved lobule. Stylopodium short-conic; styles 1–1.5 × stylopodium, spreading. Fruit ovoid, ca. 1 × 0.8 mm, base cordate, surface shortly papillose-pubescent; vittae 3 in each furrow, 6 on commissure. Seed face plane. Fl. and fr. Jun–Sep.
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