Erect herb. Stem 3 cm diam., hidden in upper part by adventitious roots and accumulated dry cataphylls and remains. Cataphylls ca. 23 cm long, marcescent, little by little splitting up. LEAVES: Petioles subterete but adaxially with a slender median groove with rounded margins, 54-57 cm long, sheath to 5.8 cm long; geniculum 1.5-2 cm long. Leaf blade 0.7 of petiole length, chartaceous-semicoriaceous, elliptic, 37.5-39.5 cm long 17.8-18.7 cm wide (2.1 x longer than wide), equally obtuse at each end, apex shortly acuminate, with numerous, fine, dark brown punctations on both faces, all lateral veins fine and subequal adaxially, abaxially with ca. 7-8 lateral veins per side slightly stronger than the rest. INFLORESCENCE: Peduncle solitary, 14-16 cm long. Spathe 13.5 cm long, tube well defined and 4.5 cm long. Spadix on a stipe 0.6 cm long, pistillate part 2.4 cm long, sterile staminate part 0.5-1 cm long, fertile part 9.5-10 cm long. Ovary 2-locular, each locule with ca. 6 ovules superposed in each two rows. Staminate flowers 4-stamened.
It is distinguished by the rather thin-textured, elliptic leaf blades prominently dark-puncate on both faces.