Canopy epiphyte, climbing to at least 45 cm tall. Stems terete to rounded triangular, (2-)3-5 mm diam., internodes of climbing stems 3.5-5.5(-9.5) cm, axillary buds inconspicuous. Leaves thinly coriaceous, sessile, those of short stems and rosettes unknown, those of climbing stems oblanceolate-spathulate to oblong, (5-)6.5-8(-12) by 1-1.6(-2.5) cm, apex rounded-acute, margin slightly revolute, base attenuate, clasping the stem for half its circumference, not auriculate or decurrent. Longitudinal nerves 2 or 3 on each side of the midrib in the outer half from the leaf base, fairly conspicuous. Pennate nerves numerous, reticulate. Lower pitchers unknown. Upper pitchers originating gradually or abruptly from the end of the tendril, incurved with a 1-2 cm arc, infundibuliform 5.5(-9) cm long, lower 1/2-2/3 cylindrical to slightly infundibular, 3.75 cm tall, 1 cm wide; upper part abruptly flaring to 4.7(-5) cm wide at the lip; wings or ribs not apparent; mouth orbicular, horizontal, not forming a column for the lid; peristome barely differentiated from rim of pitcher mouth, 0.2 mm wide, lacking teeth or ribs; lid held arched over mouth, linear-oblong, 4.5-5 by 0.2-0.4 cm, lower surface lacking appendages, nectar glands crater-like, sparsely scattered at the margins, elliptic, 0.2 by 0.1 mm; spur linear, 3-4 mm long, reflexed, unbranched. Male inflorescence 17 cm long; peduncle 5 cm long, c. 1.5 mm diam. at base; partial peduncles c. 50, 1-flowered; pedicels 8 mm long at base (4 mm long at apex); bract inserted near the base, small and filiform; tepals oblong-lanceolate, acute, 3 by 1 mm; staminal column c. 4 mm long. Fruits and seeds unknown. Indumentum inconspicuous, puberulent, hairs erect, simple, 1-2 mm long, stems soon glabrescent, but hairs persisting in leaf axils and on pitcher lid, leaves and pitchers glabrous. Colour of pitchers yellowish green, drying blackish brown.
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