Terrestrial climber to 2 m tall. Stems terete to slightly angular, 0.3-0.6 cm diam., internodes 1.5-9 cm long. Leaves thinly coriaceous, sessile, obovate-spathulate to oblanceolate-spathulate, 6-20 by 1.5-4.5 cm, apex rounded or acute, rarely emarginate, peltate or not, base attenuate to more or less parallel-sided, clasping the stem by 1/2 its circumference, subauriculate, not decurrent. Longitudinal nerves 2-4 on each side of the midrib, scattered throughout blade. Pennate nerves scattered, irregular, arising perpendicular to midrib, or obliquely ascending. Lower pitchers ellipsoid or ellipsoid-cylindrical, 10-20 by 2.5-6 cm; with 2 narrow, sparsely fringed wings 1-1.5 mm broad, fringe elements 7 mm long, 1-2 mm apart; mouth oblique, ovate-acuminate; peristome flattened, c. 7 mm wide, ribs c. 1 mm apart, inner edge with teeth, outer edge entire; lid orbicular, apex rounded, base cordate, lower surface lacking appendages, nectar glands circular; spur entire, filiform. Upper pitchers infundibulate, narrowed at mouth, often with a broad curve near base; 8-16(-21) by 2.5-4(-6) cm; wings lacking; mouth horizontal at front, oblique and sometimes attenuate to lid; peristome rounded, to 5 mm wide; lid orbicular to subtriangular, 2.5-5 by 2.5-4 cm, apex rounded, base cordate, lower surface with or without a thickened boss near the apex, nectar glands numerous, orbicular, 0.2-0.3 mm wide, most dense towards centre, often with a few, large (0.8-1 mm) glands towards the apex; spur simple, 2-8 mm long. Male inflorescence 10-23 by 1.8-3.5 cm; peduncle 4.5-6.5 cm long, 1-1.5 mm diam. at base; partial peduncles 1-or 2-flowered; bract filiform c. 10 mm long; pedicels 4-15 mm long; tepals elliptic, 2-4 by 1-2 mm; androphore 2-4 mm long; anther head c. 1 mm diam. Fruit and seed unknown. Indumentum absent from stem and leaves, sparsely puberulent on pitcher, inflorescence puberulent from base of rhachis to lower surface of tepals, hairs white, simple, appressed, 0.2-0.4 mm long, androphore puberulent and pitcher surface, glabrescent. Colour of pitchers green, peristome with red lines, and mottled red within; flowers creamy-green to red; indumentum white to rufous brown.
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