Herb to 100 cm. tall.. Tuber depressed-globose, 3–4 cm. in diameter.. Leaves 1–2; petiole with basal sheaths imbricate, forming green to brownish-red pseudostem; free apical part of petiole 30–34 cm. long, green to brownish red; blade radiately divided to base, circular in outline; leaflets 6–8, subequal in size, broadly elliptic to obovate, acuminate, base cuneate, 11–20 cm. long, 4–8 cm. broad, margins entire.. Inflorescence subequal to leaves.. Spathe 16–28 cm. long; tube cylindric to obconic, not constricted apically, 5.5–8 cm. long, 2.5–3 cm. in diameter, outer surface pale green, sometimes with reddish markings; limb broadly ovate, long-acuminate, base strongly auriculate with revolute margins, 11–20 cm. long, 5–8 cm. broad, longer than tube, dull green, darker than tube.. Spadix unisexual, 8–10.5 cm. long, longer than spathe-tube; sterile appendix clavate-cylindric, 5–7 cm. long, 0.5–1.2 cm. in diameter, apex rounded, truncate and stipitate at base with 4–8 mm. long stipe, pale green; staminate spadix ± sessile, fertile part cylindric, 2.5–3.5 cm. long, 0.5–0.8 cm. in diameter, flowers distant; pistillate spadix subsessile, fertile part ± conic, ± 2.3 cm. long, 0.9 cm. in diameter, flowers ± congested.. Staminate flower composed of 1–3 stamens; anthers dehiscing by subcircular ± oblique apical slits.. Pistil ovoid, 3–4 mm. long, tapering to short style with capitate stigma.. Fruiting spadix 9 cm. long, 4 cm. in diameter. Berries subglobose, ± 1 cm. in diameter, 1–3-seeded, turning orange (? eventually red).. Seeds subglobose, 5–6 mm. in diameter.
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