Plants 30–55 cm. Stem branched above. Basal petioles 8–14 cm, slender, sheaths broadly inflated; blade broadly triangular in outline, 3–5.5 × 4–6 cm, 1–2-ternate; lower pinnae short-petiolulate, subtriangular or broadly ovate, 3-lobed; ultimate segments lanceolate-ovate, margin irregularly pinnate or coarse-serrate, nerves purplish-red. Umbels ca. 7 cm across; peduncles 14–32 cm; bracts absent or 1–2, linear, 4–10 mm, purplish-red; rays 12–18, 1.5–4 cm, unequal; bracteoles 3–5, linear; umbellules 13–21-flowered; pedicels unequal. Calyx teeth minute, triangular-ovate. Petals obovate, white. Young fruit ovoid (mature fruit not known). Fl. Oct.
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