Terrestrial climber (sometimes epiphytic?) to 10 m tall. Stem terete (less usually ridged or winged), 6-11 mm diam. Leaves coriaceous, petiolate (indistinctly so in rosette leaves); leaf blade lanceolate or oblong-lanceolate, (8.5-)15-23 by (3.5-)4-9 cm, apex rounded or acute, rarely peltate, base obtuse to decurrent; petiole 4-7.5 cm long, canaliculate, sheathed at base, less usually decurrent with two wings 1-2 mm wide descending as curved ridges to the internode below. Longitudinal nerves 2 or 3 on each side of the midrib in the outer 1/4, inconspicuous. Pennate nerves numerous, indistinct. Lower pitchers rarely collected, cylindrical, slightly waisted and narrowing c. 2/3 from the base, 10-18 by 3-4 cm, with two fringed wings 6 mm wide, fringed elements 4-6 mm long, 2-4 mm apart; mouth ovate, oblique, concave, rising to the vertical at the rear, forming a short column; peristome cylindrical, rarely slightly flattened, 2-3 mm broad in front, 3-5 mm broad near the lid, ribs 0.2-0.3 mm apart, with a conspicuous gland between each rib, outer margin entire, inner edge obscurely dentate, teeth 0.5 mm long; lid ovate to circular, 3-5 cm diam., apex rounded, base cordate, lower surface with a laterally flattened, semicircular basal appendage, apical appendage absent; nectar glands scattered throughout, orbicular, narrowly bordered, 0.1-0.15 mm diam., a few larger glands 0.2-0.4 mm diam. near margin and on appendage and often in a small aggregation near the apex; spur 5-15 mm long, unbranched. Upper pitchers as the lower, but cylindrical to very narrowly infundibuliform, 15-25 by 3-6 (-7.5) cm, wings reduced to ridges but often with scattered fringed elements 4.5 mm long; peristome 2-3 mm broad and slightly raised in front, 4-7(-9) mm broad at rear, ribs 0.2-0.5 mm apart, teeth 0.5 mm long, outer edge entire, rarely slightly sinuate; lid orbicular, usually slightly broader than long, 3-5.5(-8) by 5-6(-7.5) cm, apex slightly retuse or rounded, base cordate; basal appendage semi-orbicular, 3-8 by 3-5 mm high, nectar glands orbicular, thinly to thickly bordered, 0.2-0.35(-0.5) mm diam. Male inflorescence 18.5-35 cm long; peduncle 10-11 cm long; partial peduncles to c. 140 (male), 2-flowered, 5 mm long; bracts absent; pedicels 3-8 mm long; tepals elliptic 4-5 by 1.5-3 mm; androphore 5 mm long; anther head 1-1.5 by 1-1.5 mm. Fruit valves 18-35 mm long. Seed fusiform, 8-18 mm long, central body tuberculate. Indumentum coppery hirsute, of dense short, branched hairs c. 0.5 mm long mixed with scattered long simple hairs 2-3(-4) mm long, on stems (glabrescent), petioles, tendrils and pitchers; lower surface of leaf with only scattered simple hairs 2-3 mm long; pitcher lid appendage and adjacent surface puberulent. Colour of outer pitcher and lid cream to yellow to pale green, splashed with red; peristome yellowish with dark red stripes. Lower leaf blade drying dark brown.
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