Tuber depressed, about 3 1/4 in. diam. Cataphyllary leaves 3–4 in. long, nearly as long as the peduncle, which is 4–4 3/4 in. long. Spathe green outside; tube 2 1/3–2 3/4 in. long and about 3 1/4 in. in diam., obliquely campanulate, densely covered with short filiform processes inside; limb 4 3/4–6 in. long and 4 in. broad, oblong-ovate, obtuse, undulated, marked with violet nerves inside. Spadix shortly exceeding the spathe; female part 3/4–1 in. long, and about 2/3 in. thick; male part much thicker than the female portion, 1 1/6–1 1/3 in. long, 3/4 to nearly 1 in. thick; appendix 6–6 3/4 in. long, gradually tapering upwards, dull violet. Ovary cylindric; stigma cushion-like. Anthers subsessile, depressed at the apex.