Stem erect, ca. 40 cm tall, ca. 1.2 cm in diam. Petiole ca. 46 cm, basal 10-12 cm sheathing; leaf blade green, ovate-oblong, ca. 18 × 11-12 cm, base broadly rounded, apex abruptly acuminate, acute with tubular tip 2-3 mm; primary lateral veins 5 or 6 per side, secondary veins numerous, parallel. Inflorescences several (up to 6) together; peduncle 4-5 cm, slender, 1-2 mm in diam. Spathe yellow-green, cymbiform, ca. 3.5 × 1.2 cm, apex with rostrum 3-4 mm. Spadix shorter than spathe, ca. 2.5 cm; female zone cylindric, ca. 10 × 3 mm; ovary ovoid; stigma subsessile, capitate; usually 1 staminode exceeding associated pistil; male zone clavate, ca. 2 cm × 1.5-3 mm, apex obtuse. Fl. Oct.
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