Hemi-epiphytic vine. Stem: greyish, internodes 1-1.7 cm long. Prophyll 7.5 cm long, cream. LEAVES: Petiole 17-24 cm long, slightly canaliculate adaxially. Leaf blade 23-29 x 8.5-13 cm, ovate to ovate-elliptic to elliptic, apex cuspidate (2 cm long), base cuneate, more rarely truncate, distinctly paler on lower surface, chartaceous, primary lateral veins 6-7 per side; posterior divisions absent. INFLORESCENCE: 3-4(-8) per floral sympodium, peduncle 6-8 cm long. Spathe (5)-8.5-12.5 x 1.8-2.5 cm long, lanceolate, moderately constricted, pale green inside and outside. Spadix 8.5-11 cm long, male zone 5.6-6 cm long, cream; male sterile zone 1.8-2 cm long, green; female zone 2.5-3 cm long, green. Flowers: stamens 0.8-1.8 x 0.6-1.5 mm; intermediate staminodes 1.5-2.3 x 1-1.5 mm; gynoecium 1.2-1.5 x 1-1.5 mm, ovary 5-6-locular, uniovulate, placentation basal.