Nepenthes merrilliana macfarl.

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Description:
Terrestrial shrub or low climber. Stem usually winged, sometimes terete. Leaves sessile; lamina linear or narrowly oblong to oblanceolate, 20–60 x 3.5–7 cm, base attenuate, clasping the stem and only slightly decurrent; longitudinal nerves to 6–7 on each side of the midrib. Lower pitchers 30–35 x 14–16 cm, broadly ovoid or cylindrical with lower half swollen and expanded; wings up to 2.5 cm wide, with fringes to 1.8 cm long. Peristome dark red, loosely cylindrical, to 3 cm wide, lined with elongated ribs to 2 mm high; inner edge with needle-like teeth to 1.5 mm long; lid broadly ovate, 6–12 x 5–9 cm, without an appendage; apex rounded, base shallowly cordate; spur unbranched, 1.6 x 0.3 cm. Upper pitchers often smaller than upper pitchers; wings reduced to ridges. Pitchers usually light green, with sparsely scattered minute hairs.

References:
Cheek, M. & M. Jebb. 2001. Nepenthaceae. Flora Malesiana ser. I, vol. 15: 1–157.
Jebb, M. & M. Cheek. 1997. A skeletal revision of Nepenthes (Nepenthaceae). Blumea 42: 1–106.
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.
Macfarlane, J.M. 1927. The Philippine species of Nepenthes. Philippine Journal of Science 33: 127–140.
McPherson, S. & V.B. Amoroso. 2011. Field Guide to the Pitcher Plants of the Philippines. 60p. Redfern Natural History Productions Ltd., Poole, Dorset, UK.
Pelser, P.B., J.F. Barcelona, & D.L. Nickrent (eds.). 2011 onwards. Co’s Digital Flora of the Philippines. http://www.philippineplants.org.

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