Terrestrial shrub to at least 1 m tall, probably not climbing. Stems terete, 1.5-3 cm diam. Leaves thickly coriaceous, strongly petiolate, blade of short stems subrectangular to obtriangular, widest at the apex, to 45 by 22 cm, several cm wider at the apex than the base, apex ± deeply emarginate or retuse, base truncate to shallowly cordate, margin ± undulate; petiole to 27 cm long, stout, canaliculate-winged, wing 1.8 cm wide at the base, amplexicaul, clasping the stem for its whole circumference, sheathed, not auriculate or decurrent. Longitudinal nerves 5 on each side of the midrib, ± equidistant, conspicuous. Pennate nerves numerous, initially at a steep angle with the midrib, then at 90°, overlapping the longitudinal nerves, conspicuous. Lower pitchers poorly known, but with two fringed wings. Upper pitchers cylindrical, up to 30 by 10 cm, wings absent, mouth ovate, oblique, slightly concave, sometimes the front protruding in a triangle upwards; peristome flattened, up to 6 cm wide, with coarse ribs 1 mm apart, outer markedly sinuate, inner surface dentate; lid ovate to subtriangular, up to c. 9.5 by 6.5 cm, apex acute to rounded, base cordate, lower surface with rounded basal appendage c. 13 mm high, 12 mm wide, midline with a keel c. 1 mm high extending to lid apex, nectar glands very sparsely scattered (c. 100 per lid), longitudinally elliptic, bordered, 0.3-0.6 mm long, mixed with sessile red glands c. 0.1 mm diam.; spur 10-12 mm long. Inflorescence incompletely known, length unknown, peduncle to 30 by 1 cm, partial peduncles 2-flowered, 7 mm long; bracts absent; pedicels 18-30 mm long, tepals elliptic-ovate, 5 by 3 mm, androphore 6 mm long, anther head 1.25 mm wide. Fruit valve 2.5-3.8 cm long. Seed unknown. Indumentum absent from stem and leaves excepting the leaf margin which densely fringed with red, branched hairs c. 0.8 mm long; pitcher ferruginously villose; inflorescence densely covered in short, 3-or 4-armed white hairs. Colour of pitcher green, excepting peristome which is red, striped green.
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