Plants ca. 80 cm high. Root cylindrical. Stem densely hispid. Basal leaves petiolate, sparsely pubescent; leaf blade ternate, lateral leaflets ovate, 3–5-lobed, terminal leaflets broadly ovate, 12–17 × 10–14 cm, both surfaces sparsely pubescent, especially on abaxial veins. Cauline leaves similar to the basal, gradually reduced upward. Peduncles 10–20 cm; bracts absent; rays 14–17, unequal, hispid; bracteoles 5–7, linear, reflexed. Calyx teeth lanceolate. Petals white, outer flowers in umbel somewhat radiant. Fruit broadly ovoid, 6–8 × 5–7 mm, glabrous; dorsal and intermediate ribs filiform, lateral ribs winged, wing ca. 0.8 mm wide; vittae solitary in each furrow, clavate, slightly exceeding 1/2 length of mericarp, commissure without vittae. Seed face plane. Fl. and fr. Aug–Oct.
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