Climber, sometimes epiphytic, to at least 2 m tall. Stems winged to strongly triangular, 3.5-9 mm diam. Leaves chartaceous to thinly coriaceous, sessile, rosette leaves unknown, stem leaves with blade oblanceolate or narrowly oblong, 15-25 by 2-3 cm, apex acute, inconspicuously peltate, base gradually tapered, clasping the stem for 2/3 its circumference, decurrent, prominently winged to the node below or for only ± 1 cm. Longitudinal nerves 3-6 on each side of the midrib, evenly scattered. Pennate nerves oblique, obscure. Lower pitchers rare, as the upper but with tendril in front. Upper pitchers hourglass-shaped, 9-16 by 3-8 cm, basal half obliquely ellipsoid, apical half broadly infundibular, up to twice as broad as basal portion, waist constriction central, 1/2-1/3 the width of the base or apex, fringed wings absent, reduced to ridges < 1 mm wide; mouth circular to shortly elliptic, horizontal or slightly oblique, straight; peristome broad, subcylindrical, 10-25 mm wide, ribs coarse, 1-2 mm apart, outer edge with 4-6 slight undulations on each side, each protruding 3-4 mm, inner edge shortly dentate; lid membranous, narrowly elliptic, 4-6 by 1.8-2.25 cm, apex rounded, base rounded, lower surface lacking appendages, nectar glands absent from a band c. 6 mm wide along the midline, pit-like or slightly bordered, mostly orbicular 0.4-0.5 mm diam., less usually transversely elliptic, 0.8 mm long; spur flattened, 9 mm long, entire. Male inflorescence 28-60 cm long; peduncle 11-21 cm long; partial peduncles 70-180, 1-flowered; bracts absent; pedicels 5-10 mm long; tepals elliptic, 2-3.5 by 1.5 mm; androphore 3-3.5 mm long; anther head 1.5 mm wide. Fruit valves 25-32 mm long. Seed unknown. Indumentum absent from stems and leaves; pitchers with inconspicuous appressed scattered, simple reddish hairs 0.5 mm long; inflorescence as the pitchers, but densely hairy. Colour of pitchers uniformly creamish white, peristome red, inner surface yellowish.
Home