Terrestrial shrub or climber to 4 m tall. Stems terete, those of rosettes 0.3-0.4 cm diam., internodes 0.5-1.7 cm long; climbing stems 0.5-0.8 cm diam., internodes 1-5 cm long. Leaves coriaceous, petiolate; rosette leaves with blades oblanceolate, 8.5-11.5 by 4-4.5 cm, apex abruptly acute, base cuneate-decurrent; petiole 2.5-3.5 by 0.35 cm, canaliculate, clasping the stem by 1/2-2/3 its circumference; leaf blades of climbing stems lanceolate to oblong, 12-18 by 2.8-5 cm, apex acute-attenuate, base obtusely rounded; petiole 3.5-4.5 cm, canaliculate, clasping the stem for 1/2-2/3, rarely decurrent as two ridges to the node below. Longitudinal nerves 1 (or 2) on each side of the midrib close to the margin, moderately conspicuous above. Pennate nerves patent, inconspicuous. Lower pitchers subcylindrical, 9-10.5 cm long, slightly hipped: the lower half ellipsoid, 2.2 cm wide, the upper half cylindrical, 1.8 cm wide, with two fringed wings 2 mm wide, fringed elements 5 mm long, 1.5 mm apart; mouth oblique, concave, ovate, rising at the elongated apex into a column, peristome subcylindrical, 4 mm wide, with conspicuous ribs c. 0.2 mm high, 0.3-0.5 mm apart, outer edge entire, inner edge shallowly toothed near the column; lid orbicular, 2-2.1 by 1.9-2 cm, apex rounded, base cordate, lower surface with a laterally flattened, semi-circular or keel-like basal appendage up to 6-7 mm long, 1.5 mm tall, nectar glands 30-35 circular, narrowly bordered, 0.3-0.4 mm diam. scattered along the midrib; spur not seen. Upper pitchers narrowly infundibulate, rarely subcylindrical, 15-26 by 3.5-5.7 cm, lacking fringed wings, mouth slightly concave, column poorly defined; peristome cylindrical, 2-7 (-13) mm wide, ribs well defined 0.2-0.3 mm high, 0.5 mm apart, outer edge entire or, less usually, sinuate, with up to 3 lobes on each side, each lobe up to 0.4 cm long; lid orbicular, 3.5-4 by 4-4.2 cm, apex rounded or slightly emarginate, base deeply cordate, basal appendage semi-circular, laterally flattened, 5 by 5 mm, on a ridge 10-18 by 2-3 mm, nectar glands orbicular, slightly bordered, 0.2-0.5 mm diam. either densely covering the whole of the surface of the lower lid, or sparsely scattered apart from two arms diverging from the appendage towards the apex where densely spread, sometimes the apex with a cluster of larger elliptic or orbicular glands up to 1 mm long; spur stout, simple, 8-9 by 1.5-1.8 mm, apex rounded. Male inflorescence 48-60(-90) by 4-5 cm; peduncle 15-18 cm long, c. 4 mm diam. at the base; partial peduncles 1-flowered, to 20 mm long, bearing a patent filiform bract 0.5(-1.5) mm long, inserted 3-5 mm from the base; tepals patent, obovate, 3 by 2 mm; androphore 1.5 mm long; anther head 1 by 2 mm. Fruit with bract persisting, valves 24 mm long. Seed unknown. Indumentum of stems densely short-pubescent with dark red-brown, sometimes whitish, patent hairs 0.2-0.3 mm long, sometimes interspersed with hairs 0.5-1 mm long, extending to lower surface of the midrib, where less dense; lower surface of the leaf blade with sessile red glands, sometimes interspersed with hairs 0.2-0.3 mm long; pitcher, including upper lid, with same indumentum, but hairs much denser; lower surface of lid glabrous, or with patent simple or branched hairs 0.2-0.3 mm long; spur black sericeous; inflorescence with same indumentum as stem extending from peduncle base to lower surface of tepals, androphore, and ovary. Colour of dried leaves brown below, pitchers pale green or yellowish white, splashed with red or purple, lid marbled in same colours; inflorescence dark red with red-brown tomentum, tepals dark brown, stamens yellow.
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