Pitcher Plants of the Old World
The official IUCN conservation status of each species is taken from the latest edition of the IUCN Red List. Unofficial assessments based on the IUCN criteria are also included, but are presented in italics. Unless otherwise noted, taxonomic determinations and all other information are sourced from Stewart McPherson's two-volume "Pitcher Plants of the Old World", published in 2009. Where recent literature provides an altitudinal distribution that falls outside the range given in "Pitcher Plants of the Old World", the discrepancy is noted.