Herbs slender, 20–55 cm high. Basal leaves several; petiole 6–30 cm; blade rounded to reniform, 2–8 × 5–12 cm, nerves 7–11 palmate, base deeply cordate, margin irregularly crenate, usually setose-apiculate, apex slightly notched. Peduncles 3–6, 1.5–3.5 cm, terminal, subtended by 2 opposite, foliaceous bracts; bracts rounded or reniform, 2–4 × 5–6.5 cm, sessile; bracteoles several, linear; umbels 9–40-flowered. Petals white to greenish white, 1.2–1.4 × 1–1.1 mm. Styles short, ca. 0.3 mm, recurved. Fruit 3–3.5 × 2.2–2.8 mm. Fl. and fr. Apr–Oct.
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