Tuber subglobose, 1-2.5 cm in diam. Leaves 2 or 3; petiole 27-33 cm; leaf blade deep green, peltate, ovate or oblong, 10-17 × 5.5-12 cm, base deeply cordate, apex shortly acuminate; primary lateral veins (5 or)6-8 per side. Inflorescence including peduncle 7-15 cm, shorter than petioles; peduncle 5-8 cm. Spathe yellowish green, constricted, 4-5 cm; tube obovoid, ca. 8 mm; limb opening, 3-4 × 0.5-0.8 cm, apex obtuse to acute. Spadix 11-13 cm; female zone ca. 0.8 cm, adnate to spathe; female flowers densely arranged; pistil obovoid, 2.5-3 × 1.2-1.5 mm; stigma sessile, very small; sterile zone between female and male zones ca. 3.5 mm; male zone ca. 6 mm; thecae elongate; appendix ca. 10 cm. Berries pale green to whitish, ovoid, acute at apex. Seeds globose. Fl. May-Jun, fr. Aug-Sep. 2n = 78*.
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