LEAVES: Petiole ca. 10 cm long, margins narrow. Blade ovate-elliptic, apex subacute, base rounded, 20 cm long, more than 10 cm wide. INFLORESCENCE: Peduncle somewhat shorter than petiole. Spathe convolute up to halfway, apex acute, more than 10 cm long, dirty yellow, with a smell. Spadix: female zone 2 times longer than the male zone, clavate, apex truncate; male zone ca. 3 times more slender than the female zone, exactly cylindric. Pistils 5-locular.