Terrestrial climber to 10 m tall. Stem of short, non-climbing shoots with stem terete, 1.1-1.5 cm diam., internodes c. 2 cm long; climbing stems D-shaped, semi-circular, or subtriangular in cross section, 0.7-1.2 cm wide, with two wings 1-9 mm wide, internodes 7-10 cm long, the wings running the length of the internode, stopping just above the node to 9 mm wide; axillary buds prominent, rarely absent, cylindrical, slender, 2-5.5 mm long, acute, inserted c. 1 cm above the axil. Leaves of short stems distinctly long petiolate, oblong, 44-50 by 9-11.5 cm, apex acute, base attenuate; petiole 10-17 by 0.9 cm, canaliculate, the margins sheathing and clasping the stem for 5/6 its circumference; leaves of climbing stems elliptic-lanceolate, 13-25 by 3.8-7.5 cm, apex acute, base acute to rounded; petiole 6-11 cm long, semi-circular in cross section, the upper surface flat, 4-10 mm wide, ± winged, clasping the stem for 1/3-1/2 its diameter and decurrent into two wings. Longitudinal nerves 1 or 2 on each side of the midrib in the outer 1/4 of the blade. Pennate nerves numerous, patent. Lower pitchers ellipsoid or ovoid, 19-25 by 8.5-10 cm, wings 5-7 mm wide, with fringe elements 3-6 mm long, 2-3 mm apart; mouth obliquely concave; peristome broad, subcylindrical to slightly flattened, c. 20-30 mm wide, with fine ribs 0.6 mm apart, 0.1-0.2 mm high, outer surface sinuate, inner surface with teeth c. 1 mm long; lid ovate, 7-9.5 by 6.4-9 cm, apex round, base cordate, margin straight, lower surface densely uniformly glandular, excepting the non-glandular marginal 0.9 cm, glands volcano-like, 0.3 mm diam.; lower surface of lid with base keeled, bearing a rounded appendage 3-14 mm high from a ridge up to 18 mm long; spur c. 15 mm long, unbranched. Upper pitchers shortly infundibuliform, 7.2-11 by 5-8 cm, arising abruptly from the tendril, dilating to 1 cm and curving for 3-4 cm before expanding, slightly contracted below the peristome, lacking fringed wings but with two prominent ridges 1(-2) mm wide, these rarely, then in the upper part only, with fimbriae 1.5 mm long, 1-2 mm apart; mouth round, horizontal, abruptly rising at the rear into a neck c. 1 cm long; peristome cylindrical, (1-) 2.5(-4) mm broad, with ribs 0.1 mm high, 0.2-0.3 mm apart, outer edge not sinuate, inner edge lacking teeth; lid ovate, 2.5-6.5 by 2.6-5.2 cm, apex rounded, base cordate, margin slightly sinuate, lower surface uniformly, densely glandular, glands circular to slightly elliptic, rimmed, 0.15-0.2 mm diam., midline keeled at base, the appendage 1.5-10 mm high from a raised ridge 4-15 mm long; spur c. 10 mm long, unbranched or shortly bifurcate. Inflorescence (fide Kurata 1976) 25-35 cm long, partial peduncles 2-flowered, pedicels 10-15 mm long. Fruits and seeds unknown. Indumentum of sessile red glands 0.1 mm diam. on stem, petiole, lower surface of leaf blade, outer pitcher and upper lid; intermixed with simple red hairs 0.5 mm long on outer pitcher, upper lid and on spur; dark brown 1-or 2-branched hairs 0.6-1 mm long line the edge of the leaf blade and the petiole wing. Colour of lower pitchers pale green, streaked and blotched red or purple, peristome with numerous red stripes; upper pitchers translucent white or pale yellow, speckled or blotched with red or purple. Inflorescence colour unknown.
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