This list of Nepenthes species is a comprehensive listing of all known species of the carnivorous plantgenusNepenthes arranged according to their distribution. It is based on the 2009 monograph Pitcher Plants of the Old World[1] and, unless otherwise stated, all information is taken from this source.
Several species with an expansive geographical range are mentioned more than once. Species that are not endemic to a given region are marked with an asterisk (*).
^Cheek, M. & M. Jebb 2013. Identification and typification of Nepenthes blancoi, with N. abalata sp. nov. from the western Visayas, Philippines. Nordic Journal of Botany, published online on January 25, 2013. doi:10.1111/j.1756-1051.2012.00012.x
^ abCheek, M. & M. Jebb 2013. The Nepenthes micramphora (Nepenthaceae) group, with two new species from Mindanao, Philippines. Phytotaxa151(1): 25–34. doi:10.11646/phytotaxa.151.1.2
^ abGronemeyer, T., W. Suarez, H. Nuytemans, M. Calaramo, A. Wistuba, F.S. Mey & V.B. Amoroso 2016. Two new Nepenthes species from the Philippines and an emended description of Nepenthes ramos. Plants5(2): 23. doi:10.3390/plants5020023
^"Nepenthaceae". Co's Digital Flora of the Philippines. Philippine Journal of Systematic Biology. Retrieved August 11, 2019.
^Cheek, M. & M. Jebb 2013. Nepenthes alzapan (Nepenthaceae), a new species from Luzon, Philippines. Phytotaxa100(1): 57–60. doi:10.11646/phytotaxa.100.1.6
^ abcCheek, M. & M. Jebb 2014. Expansion of the Nepenthes alata group (Nepenthaceae), Philippines, and descriptions of three new species. Blumea59: 144–154. doi:10.3767/000651914X685861
^Cheek, M., D.N. Tandang & P.B. Pelser 2015. Nepenthes barcelonae (Nepenthaceae), a new species from Luzon, Philippines. Phytotaxa222(2): 145–150. doi:10.11646/phytotaxa.222.2.7
^ abClarke, C., C.C. Lee & V. Enar 2014. Observations of the natural history and ecology of Nepenthes campanulata. Carnivorous Plant Newsletter43(1): 7–13.
^ abcGronemeyer, T., F. Coritico, A. Wistuba, D. Marwinski, T. Gieray, M. Micheler, F.S. Mey & V. Amoroso 2014. Four new species of Nepenthes L. (Nepenthaceae) from the central mountains of Mindanao, Philippines. Plants3(2): 284–303. doi:10.3390/plants3020284
^ abcCheek, M. & M. Jebb 2013. Recircumscription of the Nepenthes alata group (Caryophyllales: Nepenthaceae), in the Philippines, with four new species. European Journal of Taxonomy69: 1–23. doi:10.5852/ejt.2013.69
^McPherson, S., J. Cervancia, C. Lee, M. Jaunzems, A. Fleischmann, F. Mey, E. Gironella & A. Robinson 2010. Nepenthes gantungensis (Nepenthaceae), a new pitcher plant species from Mount Gantung, Palawan, Philippines. In: S.R. McPherson Carnivorous Plants and their Habitats. Volume 2. Redfern Natural History Productions, Poole. pp. 1286–1295.
^ abCheek, M. & M. Jebb 2013. Typification and redelimitation of Nepenthes alata with notes on the N. alata group, and N. negros sp. nov. from the Philippines. Nordic Journal of Botany31(5): 616–622. doi:10.1111/j.1756-1051.2012.00099.x
^Gronemeyer, T., A. Wistuba, V. Heinrich, S. McPherson, F. Mey & A. Amoroso 2010. Nepenthes hamiguitanensis (Nepenthaceae), a new pitcher plant species from Mindanao Island, Philippines. In: S.R. McPherson Carnivorous Plants and their Habitats. Volume 2. Redfern Natural History Productions, Poole. pp. 1296–1305.
^McPherson, S., G. Bourke, J. Cervancia, M. Jaunzems, E. Gironella, A. Robinson & A. Fleischmann 2011. Nepenthes leonardoi (Nepenthaceae), a new pitcher plant species from Palawan, Philippines. Carniflora Australis8(1): 4–19.
^Mansell, G. & W. Suarez (2016). Nepenthes nebularum, a new species from Mindanao, Philippines. Carnivorous Plant Newsletter45(4): 132–139.
^McPherson, S., J. Cervancia, C. Lee, M. Jaunzems, A. Fleischmann, F. Mey, E. Gironella & A. Robinson 2010. Nepenthes palawanensis (Nepenthaceae), a new pitcher plant species from Sultan Peak, Palawan Island, Philippines. In: S.R. McPherson Carnivorous Plants and their Habitats. Volume 2. Redfern Natural History Productions, Poole. pp. 1332–1339.
^Cheek, M. & M. Jebb 2013. Nepenthes ramos (Nepenthaceae), a new species from Mindanao, Philippines. Willdenowia43(1): 107–111. doi:10.3372/wi.43.43112
^Cheek, M. 2011. Nepenthes robcantleyi sp. nov. (Nepenthaceae) from Mindanao, Philippines. Nordic Journal of Botany29(6): 677–681. doi:10.1111/j.1756-1051.2011.01449.x
^Cheek, M. & M. Jebb 2013. Nepenthes samar (Nepenthaceae), a new species from Samar, Philippines. Blumea58(1): 82–84. doi:10.3767/000651913X673513
^Cheek, M. 2014. Nomen novum Nepenthes. Planta Carnivora36(2): 44–45.
^Cheek, M. & M. Jebb 2013. Nepenthes ultra (Nepenthaceae), a new species from Luzon, Philippines. Blumea, published online on October 24, 2013. doi:10.3767/000651913X675124
^(in German) Micheler, M., T. Gronemeyer, A. Wistuba, D. Marwinski, W. Suarez & V. Amoroso 2013. Nepenthes viridis, eine neue Nepenthes-Art von der Insel Dinagat, Philippinen. Das Taublatt76: 4–21.
^McPherson, S.R. 2011. The discovery of Nepenthes sp. 'Anipahan'. In: New Nepenthes: Volume One. Redfern Natural History Productions, Poole. pp. 330–345.
^Lee, C.C., G. Bourke, W. Taylor, S.T. Yeo & K. Rembold 2011. Nepenthes appendiculata, a new pitcher plant from Sarawak. In: McPherson, S.R. New Nepenthes: Volume One. Redfern Natural History Productions, Poole. pp. 24–35.
^Robinson, A.S., J. Nerz & A. Wistuba 2011. Nepenthes epiphytica, a new pitcher plant from East Kalimantan. In: McPherson, S.R. New Nepenthes: Volume One. Redfern Natural History Productions, Poole. pp. 36–51.
^Golos, M.R., A.S. Robinson, M. Barer, M. Dančák, J. De Witte, A. Limberg, N.B.M. Sapawi & W. Tjiasmanto (2020). Nepenthes fractiflexa (Nepenthaceae), a new Bornean pitcher plant exhibiting concaulescent metatopy and a high degree of axillary bud activation. Phytotaxa432(2): 125–143. doi:10.11646/phytotaxa.432.2.3
^Scharmann, M. & T.U. Grafe 2013. Reinstatement of Nepenthes hemsleyana (Nepenthaceae), an endemic pitcher plant from Borneo, with a discussion of associated Nepenthes taxa. Blumea58(1): 8–12. doi:10.3767/000651913X668465
^Bianchi, A., C.C. Lee, M.R. Golos, F.S. Mey, M. Mansur, Y.M. Mambrasar & A.S. Robinson 2020. Nepenthes diabolica (Nepenthaceae), a new species of toothed pitcher plant from Central Sulawesi. Phytotaxa464(1): 29–48. doi:10.11646/phytotaxa.464.1.2
^Cheek, M. & M. Jebb 2016. A new section in Nepenthes (Nepenthaceae) and a new species from Sulawesi. Blumea61: 59–62. doi:10.3767/000651916X691510
^Cheek, M. & M.H.P. Jebb (2016). Nepenthes minima (Nepenthaceae), a new pyrophytic grassland species from Sulawesi, Indonesia. Blumea61: 181–185. doi:10.3767/000651916X693509
^Nerz, J., A. Wistuba, C.C. Lee, G. Bourke, U. Zimmermann & S. McPherson 2011. Nepenthes nigra, a new pitcher plant from Central Sulawesi. In: McPherson, S.R. New Nepenthes: Volume One. Redfern Natural History Productions, Poole. pp. 468–491.
^Lee, C.C., A. Wistuba, J. Nerz, U. Zimmermann, A.P. Paserang & R. Pitopang 2011. Nepenthes undulatifolia, a new pitcher plant from South East Sulawesi. In: McPherson, S.R. New Nepenthes: Volume One. Redfern Natural History Productions, Poole. pp. 492–505.
^Cheek, M.R. & M.H.P. Jebb 2009. Nepenthes group Montanae (Nepenthaceae) in Indo-China, with N. thai and N. bokor described as new. Kew Bulletin64(2): 319–325. doi:10.1007/s12225-009-9117-3
^Robinson, A., J. Nerz, A. Wistuba, M. Mansur & S. McPherson 2011. Nepenthes lamii Jebb & Cheek, an emended description resulting from the separation of a two-species complex, and the introduction of Nepenthes monticola, a new species of highland pitcher plant from New Guinea. In: McPherson, S.R. New Nepenthes: Volume One. Redfern Natural History Productions, Poole. pp. 522–555.
^ abCheek, M. 2015. Nepenthes (Nepenthaceae) of Halmahera, Indonesia. Blumea59: 215–225. doi:10.3767/000651915X689091
^Wilson, G.W. & S. Venter (2016). Nepenthes parvula (Nepenthaceae), a new species from Cape York, Queensland, Australia. Phytotaxa277(2): 199–204. doi:10.11646/phytotaxa.277.2.7
^Nunn, R. & C.N.A. Vu 2016. An account of the Nepenthes species of Vietnam. Carnivorous Plant Newsletter45(3): 93–101.
^Cheek, M., M. Jebb, B. Murphy & F. Mambor (2018). Nepenthes section Insignes in Indonesia, with two new species. Blumea62(3): 174–178. doi:10.3767/blumea.2018.62.03.03