Hemi-epiphytic, scandent vine. Stem: green apex becoming greyish-brown in the mature parts, internodes 2-4 cm long. Prophyll 20-23 x 3 cm, narrowly triangular, green to greenish-cream to entirely cream, becoming brown. LEAVES: Petiole 27-39 cm long. Leaf blade 36-42 x 14-20 cm, ovate to ovate-triangular, apex acuminate, base sagittate, distinctly paler on lower surface, chartaceous to subcoriaceous; anterior division 27-40 x 14-23 cm, primary lateral veins 3-4 per side; posterior divisions 7-10.5 x 7-12 cm, acroscopic veins 0-2, basiscopic vein 1 per side; basal veins 1-3, none free to base; posterior rib not naked. INFLORESCENCE: 3-4 per floral sympodium, peduncle 4-8 cm long, green to greenish-grey. Spathe 12-13.5 x 2-2.6 cm, narrowly ovate, not constricted, reflexed during anthesis, green becoming white outside, white with vinaceous base inside. Spadix 13-14 cm long, male zone 3.2-4 cm long, cream; intermediate male sterile zone 0.5-0.6 cm long, cream; apical male sterile zone 4-5 cm long, very narrow at the end, cream; female zone 4-5 cm long, greenish. Flowers: stamens 0.8-2 x 0.7-1.2 mm; apical staminodes 1-2 x 0.8-1.2 mm; intermediate staminodes 1.8-2.3 x 0.8-1.5 mm; gynoecium 1.2-2 x 1-1.8 mm, cilindrical, ovary 9-11-locular, ovules 4-5 per locule, placentation sub-basal. INFRUCTESCENCE: Berries not seen.