Epipetric; stems erect; internodes moderately short; cataphylls not seen. Leaves with petiole 48-49 cm long, drying dark brown, 5 mm diam. midway, sheathed to about 10 cm at base (at least when subtending an inflorescence), green-verrucose in lower 1/3, becoming more conspicuously club-shaped scaly toward the apex (these somewhat denser toward the apex); blade ovate-cordate, 34 cm long, 28-30 cm wide, subcoriaceous, acuminate at apex, conspicuously cordate and broadest at the base, dark green and matte above, moderately paler and semiglossy below, drying grey-green above, greenish brown below; sinus broadly hippocrepiform, to 8.5 cm deep; anterior lobe 26.5 cm long, nearly straight along most of its margin; posterior lobes 12.5-14.5 cm long, 9-10 cm wide; midrib flattened, drying somewhat darker than surface above, narrowly rounded and drying much darker than the surface below; basal veins 7-8 per side, lst-2nd free to base, the 3rd almost free, the 5th-6th coalesced 4.3 cm, drying narrowly rounded and much darker than the surface; posterior rib naked throughout most of its length; primary lateral veins 4-5 per side, arising at a 30-45o angle, drying dark brown, darker than the surface; minor veins drying moderate ly distinct, in part wrinkled. Inflorescence with a peduncle 5-5.5 cm long; spathe 14-19.5 cm long, green outside, blade yellowish inside, tube red inside; spadix with pistillate portion 8.3 cm long, 2 cm diam. midway, 1.2 cm diam. at apex; staminate portion 8-8.2 cm long, 9-10 mm diam. at base, to 1.2 cm diam. in upper 1/3; pistils 3.5 mm long, 2.5 mm diam.; locules 5; ovules 15-20 per locule, 1 mm long, 0.2 mm diam.; placenta tion axile, the ovules dispersed along the entire length of the locule.
Planta epipetrica; internodia brevia; folia petiolo 48 -49 cm longo, lamina ovato-cordata, 34 cm longa, 28 30 cm lata, lobulis posterioribus 12.5-14.5 cm longis, nervis basalibus 7-8 utroque, nervis lateralibus primariis 4-5 utroque; pedunculus 5-5.5 cm longus; spatha 14 19.5 cm longa, viridis extus, lamina lutea intus, tubo rubro intus; spadix pistillatus, 8.3 cm longus; ovula 15-20 in quoque loculo.