Nepenthes nigra is a tropical pitcher plant known from a number of mountains across Central Sulawesi, where it grows at elevations of 1500–2700 m above sea level. The specific epithet nigra refers to the dark colouration of the pitchers and stem. The species is closely related to N. hamata and N. tentaculata.
Nepenthes kerrii is a tropical pitcher plant native to Tarutao National Marine Park in southern Thailand, where it grows at elevations of 400–500 m above sea level. The 2018 IUCN assessment also considers the taxon found on Langkawi Island to be conspecific. This species is thought to be most closely related to N. kongkandana.
Nepenthes kongkandana is a tropical pitcher plant endemic to Songkhla Province in southern Thailand. It is closely related to N. kerrii.
Nepenthes andamana is a tropical pitcher plant endemic to Phang Nga Province, Thailand, where it grows near sea level in coastal savannah and grassland. It is thought to be most closely related to N. suratensis.
Nepenthes chang is a tropical pitcher plant endemic to the Banthad Mountains of central Thailand, where it grows at elevations of 300–600 m above sea level. It is thought to be most closely related to N. kampotiana.
Nepenthes suratensis is a tropical pitcher plant endemic to Surat Thani Province, Thailand, where it grows near sea level in coastal savannah and grassland. It is thought to be most closely related to N. andamana.
Nepenthes holdenii is a tropical pitcher plant from western Cambodia, where it grows at elevations of 600–800 m above sea level. The species was originally known from only two peaks in the Cardamom Mountains, but the discovery of a new population was reported in October 2011. Seeds were collected in 2014 and the species was successfully introduced into cultivation.
Nepenthes ceciliae is a tropical pitcher plant endemic to the Philippine island of Mindanao, where it grows at 1500–1880 m above sea level. Its discovery was announced online in August 2011.
Nepenthes pulchra is a tropical pitcher plant endemic to the Philippine island of Mindanao, where it grows at 1300–1800 m above sea level. Its discovery was announced online in August 2011.
Heliamphora arenicola is a species of marsh pitcher plant known only from the western side of the Ilu–Tramen Massif in Venezuela's Gran Sabana, where it grows at elevations of less than 2000 m. It may also occur on Karaurin Tepui.
Heliamphora ceracea is a species of marsh pitcher plant known only from the Brazilian side of Pico da Neblina in the Neblina Massif. It has been collected from an elevation of 1900 m.
Heliamphora collina is a species of marsh pitcher plant known from the Los Testigos and Ptari-tepui massifs in Venezuela It grows at elevations of 1700–1825 m. The first specimens of the species were first collected by Otto Huber, Julian Steyermark and others in 1986 and originall classified as Heliamphora heterodoxa. After additional in-situ studies it was described as a new species in 2011 by Andreas Wistuba, Joachim Nerz, Stewart McPherson and Andreas Fleischmann.
Heliamphora purpurascens is a species of marsh pitcher plant known only from the summit area of Ptari Tepui in Venezuela, where it grows at elevations of 2400–2500 m.
Nepenthes appendiculata is a tropical pitcher plant known only from the Hose Mountains of central Sarawak, Borneo, where it grows at elevations of 1450–1700 m above sea level. The species is characterised by an enlarged glandular appendage on the lower lid surface, for which it is named.
Nepenthes epiphytica is a tropical pitcher plant known only from the Berau and East Kutai Regencies of East Kalimantan, Borneo, where it grows at an elevation of around 1000 m above sea level. Prior to its formal description as a species, N. epiphytica was considered to be a variant of the closely related N. fusca. Nepenthes epiphytica belongs to the loosely defined "N. maxima complex", which also includes, among other species, N. boschiana, N. chaniana, N. eymae, N. faizaliana, N. fusca, N. klossii, N. maxima, N. platychila, N. stenophylla, and N. vogelii.
Nepenthes undulatifolia is a tropical pitcher plant known only from South East Sulawesi, where it grows at an elevation of around 1800 m above sea level. The specific epithet undulatifolia refers to the wavy laminar margins of this species.
Nepenthes monticola is a tropical pitcher plant known from a number of mountains in the west central highlands of West Papua, New Guinea, where it grows at elevations of 1400–2620 m above sea level. Prior to its description as a species in 2011, N. monticola was lumped with the closely related N. lamii.
New Nepenthes: Volume One is a reference work by Stewart McPherson on the pitcher plants of the genus Nepenthes. It was published in 2011 by Redfern Natural History Productions and focuses on discoveries made since the release of McPherson's 2009 monograph, Pitcher Plants of the Old World. The book was edited by Alastair Robinson.
Sarraceniaceae of South America is a monograph on the pitcher plants of the genus Heliamphora by Stewart McPherson, Andreas Wistuba, Andreas Fleischmann, and Joachim Nerz. It was published in September 2011 by Redfern Natural History Productions and covered all species known at the time.
Nepenthes rosea is a tropical pitcher plant known only from Krabi Province, Peninsular Thailand, where it grows at 450–520 m above sea level. It is unusual in that it sometimes produces a rosette along the peduncle.
