Terrestrial climber to 3(-9) m tall. Stems terete or slightly 2-angular-ridged; rosette stem 2 mm diam., internodes 1-6 mm long; climbing stem slightly flexuose, (1.5-) 2-2.5(-3) mm diam., internodes (1.5-)3-5(-6.5) cm, axillary buds broadly conical, 0.5-1 by 1-1.5 mm, 2-4 mm above the axil. Leaves coriaceous, sessile, rosette leaves narrowly oblanceolate-elliptic, 3-7 by 0.6-1.3 cm, apex obtuse to acute, not peltate, base clasping the stem for 1/2 its circumference; leaves of climbing stems narrowly oblanceolate-oblong, 3.5-15 by 0.7-2.5 cm, apex acute, base clasping the stem for 1/2 the circumference, winged, the wings sometimes decurrent to the node below as two low ridges; rarely perfoliate-adnate. Longitudinal nerves 1-3 on each side of the midrib in the outer 1/3 of the blade, inconspicuous. Pennate nerves perpendicular, few, in-conspicuous. Lower pitchers ovoid in the lower half, cylindrical above, 3.5-11.5 by 0.9-2 cm, the upper part 3/4 the breadth of the lower, with two fringed wings 1-2 mm broad, fringed elements 2-3.5 mm long, 0.5-1 mm apart, mouth ovate, concave, oblique, peristome cylindrical, 0.75-1 mm wide, with inconspicuous ribs, outer and inner edges entire; lid elliptic or ovate, 0.8-2 by 0.6-1.8 cm, apex rounded, base rounded or shallowly cordate, lower lid lacking appendages, nectar glands inconspicuous, sparsely and evenly scattered, bordered, circular, 0.1 mm diam.; spur 2-6 branched, divided from the base or from about 1/2 its length, 4-6 mm long. Upper pitchers resembling the lower, but more contracted at the midpoint, to about 1/2 the diameter of the basal part, often widening slightly towards the mouth, 3.5-13 by 0.9-2 cm, lacking fringed wings; mouth strongly oblique, peristome 0.75-1.5 mm broad, ribs inconspicuous, 0.25-0.5 mm apart, outer edge entire, inner entire or shallowly toothed; lid 1.1-1.9(-3.8) by 0.8-1.3(-2.1) cm, nectar glands and spur as lower pitchers. Male inflorescence 3.8-15 by 1-1.8 cm; peduncle 1.5-3 cm long, 1 mm diam. at the base; partial peduncles c. 20(-45?), 1-flowered; pedicels 3-6 mm long; bracts absent; tepals oblong, 2-3 by 1 mm; androphore 1(-1.2) mm long; anther head 1 by 1 mm. Infructescence 5-9 by 4.5-5 cm; peduncle 1.5-5.2 cm long, 1.1-1.5 mm diam. at base; fruits 6-10, valves 1.7-2.2 by 0.2-0.3 cm. Seeds filiform, 10.5 by 0.5 mm. Indumentum ab-sent from stem apart from a cluster of white hairs around the axillary bud; leaves with sessile red glands 0.1 mm diam. on the lower surface, otherwise glabrous; pitchers, upper lid and spur sparsely covered with white appressed simple hairs c. 0.5 mm long; inflorescence from base of peduncle to apex of pedicel sparsely (rarely densely) sericeous with the same hair type; lower tepals with minute white stellate hairs; ovary densely fawn sericeous; androphore glabrous. Colour of specimens black when dry; live stem purplish black; pitchers purplish black, splashed one part in ten with cream; tepals dirty purplish or brown.
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