Climbing (presumably appressed) epiphytic herb to 3-4 m, also trailing on the ground. Internodes 1.9-9.1 cm long, 0.4-0.8 cm wide, drying yellowish tan, coarsely sulcate, the epidermis brittle and cracking; roots present at distal nodes, generally few, to ca. 1.5 mm in diameter. LEAVES: Petiole 11.3-19.4 cm long, P/L= (0.57-) 0.72-0.76, sheathed 85-93% , the sheath horizontally splayed, the free portion prolonged by 1.0-3.0 mm; unsheathed portion of petiole 0.8-1.1 (-2.4) cm long. Lamina 18.2-26.2+ cm long, 9.6-13.6 cm wide, L/W= 1.81-2.20, IQI=0-2 (-6), narrowly to broadly elliptical, ovate or oblong (broadest near or below the middle), ± gradually to abruptly short- to somewhat long-acuminate apically (the acumen ca. 0.6-1.6 cm long) , truncate or broadly rounded to (most commonly) circulate to subcordate basally, with the sinus to ca. 5.5 mm deep; primary lateral veins 4-6 per side, 0.4-4.0 cm apart; abaxial laminar surface drying evenly and moderately to densely granular or low-granular, sometimes slightly alveolate; reticulate veins obvious distally and marginally; white stitching rare or occasional; resin canals not visible; adaxial surface similar, but the reticulate veins usually less conspicuous, and white stitching and resin canals not visible. INFLORESCENCES solitary; cataphylls rarely present, to ca. 8.3+ cm long and 0.3 cm wide, narrowly lanceolate; peduncle 1.4- 5.1 cm long, P/S=0.20-ca. 0.50; spathe at anthesis ca. 8.9-9.0 cm long, 2.9-3.5 cm wide, dark green to yellow-green (paler distally) , internally cream; spathe drying densely granular with moderately abundant white stitching and resin canals visible especially toward the base externally, internally ± evenly and moderately granular, with longitudinal secretory striations to at least 4/5 to apex; acumen of spathe to 0.7+ cm long. Stipe of spadix ca. 0.4-0.5 cm long; spadix 7.1-10.3+ cm long, the fertile male portion 1.0-1.7+ cm wide; sterile male zone ca. 0.7-0.8 cm long; fertile female portion of spadix 2.4-4.2 cm long, F/S=0.33-ca. 0.41, ca. 0.9-1.2 cm wide; fertile male flowers 1.2-2.0 mm long, 0.7-1.3 mm wide, irregularly polygonal, columnar; sterile male flowers 1.0-2.4 mm long, 1.2-2.3 mm wide, anvil- shaped, ± substipitate, drying darker distally; female flowers 0.9-2.0 mm long, 0.7-1.1 mm wide, the stylar canals not countable. INFRUCTESCENCES: Ripe fruits unknown. Seeds unknown.