Appressed climbing hemiepiphyte; internodes short, to 7 cm long, 0.8-3.5 cm diam.; cataphyll green, moderately thin, sharply 2-ribbed, 16.5 cm long, persisting semi-intact at upper nodes, weathering to fibers below. LEAVES with petioles 20-24 cm long, thicker than broad, to ca. 1 cm thick, deeply and narrowly sulcate adaxially, rounded abaxially, the margins rounded adaxially; blades moderately coriaceous, oblong-elliptic to oblong-oblanceolate to ovate-elliptic, 29-32 cm long, 11-14.5 cm wide, acuminate, obtuse to rounded or sub-cordate at base, dark green and semi-glossy above, much paler and matte beneath, drying green; midrib discolorous along its margin, narrowly sunken above, raised beneath, drying paler than the surface; primary lateral veins 6-8, narrowly sunken above, raised below, arising at 70-75° angle, (the lowermost often at a broader angle than those in the middle of the blade) weakly arcuate to the margin, drying paler than the surface; interprimary veins present; minor veins moderately distinct, fine and close. INFLORESCENCES paired; peduncle terete, 2 cm long; spathe (immature) to 9.5 cm long, wine colored outside on spathe tube, green on spathe blade; pistillate flower with 7-8-locular ovary. INFRUCTESCENCE not seen.