Terrestrial climber. Stem terete, 8⎼10 mm in diameter. Leaves petiolate; lamina elliptic to oblong, 20⎼25 cm long, 6-9 cm wide; longitudinal nerves 3 on each side of the midrib; apex obtuse; base attenuate; petiole canaliculate, 9 cm long. Lower pitchers to 18 cm tall, 5 cm wide, dull red, lined with variable blotches of dark red or purple, basal half broad, inflated, becoming narrower and cylindrical towards the pitcher mouth; wings to 1.6 cm wide. Upper pitchers to 20 cm long, 9 cm wide, infundibular in lower half, with a prominent hip, cylindrical to slightly infundibular towards the pitcher mouth; wings reduced to ribs; mouth oblique 6⎼8 cm wide, elevated towards the lid, elongated into a neck. Peristome cylindrical, sometimes flattened, 1 cm wide; ribs to 0.3 mm apart; inner edges with teeth to 1 mm long. Pitcher lid cordate, 5 cm wide, appendage near peristome attachment; spur bifurcate, 3⎼4 mm long.
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.
Gronemeyer, T., A. Wistuba, V.B. Heinrich, S.R. McPherson, F.S. Mey, & V.B. Amoroso. 2010. Nepenthes hamiguitanensis (Nepenthaceae), a new pitcher plant species from Mindanao Island, pp. 1296-1305. In: McPherson, S.R., Carnivorous Plants and Their Habitats, Vol. 2. Redfern Natural History Productions Ltd., Poole, Dorset, UK.
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.