List of Nepenthes clades

The first subgeneric division of the Nepenthes was made by Joseph Dalton Hooker in his 1873 monograph, "Nepenthaceae".

Hooker distinguished N. pervillei from all other taxa based on its seeds, which lack the appendages typical of most Nepenthes.

A second attempt to establish a natural subdivision within the genus was made in 1895 by Günther Beck von Mannagetta und Lerchenau in "Die Gattung Nepenthes".

Beck kept the two sections created by Hooker, but divided Eunepenthes into three subgroups: Apruinosae, Pruinosae, and Retiferae.

In 1928, B. H. Danser published his seminal monograph, "The Nepenthaceae of the Netherlands Indies", in which he divided Nepenthes into six clades, based on observations of herbarium material.