Short climber. LEAVES: Petiole terete (at middle), 57-65 cm long. Leaf blade equaling petiole, stiff-chartaceous in sicco, ovate-triangular in outline, 55-67 cm long, ca. 32-48 cm wide (1.4-1.7 times longer than wide), base cordate-sagittate, apex obtuse and acuminate, sinus between posterior lobes mitriform and 16 cm deep, basal ribs nude 2.5 cm. INFLORESCENCE: Peduncle solitary, 4.5 cm long. Spathe to 13 cm long, not constricted. Spadix subsessile, 10 cm long, pistillate part 4 cm long. Ovary 6-8-locular, locules (2-)3-ovulate.