Terrestrial climber, 1.5 m tall or more. Stems with decurrent ridges from leaf bases, without wings, 5–6 mm diameter, internodes 1.5–2.7 cm long, glabrous, glabrous, rarely with simple hairs at stem apex. Leaves spirally arranged; lamina narrowly oblong 10–23.5 x 2.5–3.9 cm, apex acute, base acute to obtuse; longitudinal nerves 2–4 pairs, conspicuous in the marginal half; petiole distinct, winged, 4.2–7 x 0.2–1 cm, clasping the stem for 1/3–1/2 its circumference. Lower pitchers 6.5 cm tall, 3.5 cm wide, ovoid in the lower half, upper cylindrical part 2 cm wide. Upper pitchers widest at base, upper half cylindrical, greenish white with some red markings 11.5–16 x 3.2–4.3 cm. Outer surface sparsely and minutely stellate hairy, including near mouth; fringed wings absent, reduced to ridges c. 1 mm wide; mouth ovate 4–4.5 x 3.5 cm, oblique; peristome rounded to flattened, 2–5 mm wide; inner edge lacking conspicuous teeth; lid orbicular or ovate 2.6–3.2 x 2.4 x 3.5 cm, apex rounded, truncate or emarginate, base rounded to cordate; lower surface with basal appendage slightly developed. Spur simple, stout at base tapering to acute apex, 1.75–3.5 x 0.25–0.6 mm, densely long hairy, 0.5 mm long.
Cheek, M. & M. Jebb. 2013. Nepenthes ultra (Nepenthaceae), a new species from Luzon, Philippines. Blumea 58: 241–244.
Cheek, M. & M. Jebb. 2014. Expansion of the Nepenthes alata group (Nepenthaceae), Philippines, and description of three new species. Blumea 59: 144–154.
Fernando, E.S., V.B. Amoroso, D.N. Tandang, C.I. Banag, A.B. Lapis, W.S. Gruèzo, F.P. Coritico, F.A. Pollisco Jr., A.M. Palijon, M.D. Ching, F.P. Lansigan, C. Garcia-Francisco, N.M. Lita, A.M. Tagtag, & J.L. De Leon. 2021. Threatened Plants of the Philippines. 147p. Biodiversity Management Bureau, Department of Environment and Natural Resources (DENR), Quezon City, Philippines. ISBN 978-621-96498-0-3.
Pelser, P.B., J.F. Barcelona, & D.L. Nickrent (eds.). 2011 onwards. Co’s Digital Flora of the Philippines. http://www.philippineplants.org.