Terrestrial climber to at least 6 m tall. Stems obtusely angular, rarely rounded, 5-9 mm diam. Leaves coriaceous, sessile, leaves at base of the climbing stems largest, thinnest and long-spathulate, up to 20 by 5.2 cm, apex obtuse to slightly acuminate, base spathulate or cuneate, clasping the stem for 1/2-2/3 its diam., decurrent for 3-4 mm at 45°, auriculate, the lobes 3-6 mm long, rarely not auriculate; towards the stem apex the leaves are shorter, oblong, 10-15.5 by 2.1-3.4 cm, and more auriculate at the base; leaves of the basal rosettes mostly oblanceolate-spathulate, 7-8.5 by c. 2.5 cm. Longitudinal nerves 3 (or 4) on each side of the midrib in the outer half, obscure in the upper stem leaves. Pennate nerves numerous, c. 80° from the midrib, overlapping the innermost longitudinal nerves, obscure in the upper stem leaves. Lower pitchers ± broadly, rarely narrowly ellipsoid in the basal 2/3 or 1/2, gradually becoming constricted to-wards the subcylindrical upper half, sometimes ± broadly subcylindrical overall, 13-21.5(-26.5) cm long, 5.5-8.5 cm wide in the basal part, 3.5-6.7(-8.2) cm wide in the upper part, with two fringed wings 2-4 mm broad, fringed elements 4-6 mm long, c. 4 mm apart, mouth ovate, acuminate towards the lid, oblique, at 45° to the pitcher axis, concave; peristome flattened (3-)8-14(-15) mm wide, ribs 1 mm apart, each interspersed with 10-12 striae, outer margin usually markedly sinuate where the peristome is widest, inner edge lacking teeth; lid broadly elliptic-ovate, 3.2-6.5 by 2.8-4.5 cm, apex rounded, base truncate to shallowly cordate, appendages absent, nectar glands scattered, concentrated along distal part of midline, orbicular, thickly bordered, 0.2-0.5 mm diam., along midline sometimes longitudinally elliptic, c. 0.8 mm long; spur simple or branched, up to 17 mm long; rosette pitchers smaller and more slender in pro-portion than the lower pitchers, peristome not usually sinuate. Upper pitchers as the lower, but either subcylindrical, 13-27.5 cm long, or very narrowly infundibular, flaring gradually from the base where 1.3-2.2(-2.6) cm wide, to the peristome where 2.6-4.5 cm wide, or slightly hipped, constricted slightly but abruptly above the basal third where 4-4.7 cm wide to a slightly narrower upper cylindrical portion 3.5-4.5 cm wide, lacking fringed elements, but with two ridges up to 1 mm wide; peristome narrower, not always sinuate, ribs 0.3 mm apart, with 5 or 6 striae. Male inflorescence 35-65 cm long; peduncle (9-)11.5-23(-27) cm long; partial peduncles 2-(or 3-)flowered, (1-) 6-10 mm long; bracts usually present, 4-5 mm long; pedicels 7-20 mm long; tepals elliptic 3 by 1.5(-2) mm long; androphore (1.5-)2-3 mm long; anther head 1-1.25 mm wide. Fruits with valves 20-25 mm long. Seeds fusiform, 10 mm long, rugose in centre. Indumentum of scattered sessile, red globular glands 0.1 mm diam. on most parts; stem glabrescent, with short white erect simple hairs, rarely 3-branched; leaves glabrescent above, below as the stems; pitchers with erect simple to 4-branched coppery hairs or with a mixture of long simple and sparsely branched hairs and short 5 or 6 armed hairs; inflorescence with appressed simple translucent hairs from peduncle to fruit valves. Colour either all green or with pitchers suffused and spotted with red-brown, inner surface blotched with red; peristome green, striped red; rarely the whole outer surface vivid red, the peristome yellow, and the inner surface lacking red pigment. Lower surface of the leaves drying brown below.
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