Over het geslacht Nepenthes

"Over het geslacht Nepenthes" (lit. "Concerning the genus Nepenthes") is a Dutch-language monograph by Pieter Willem Korthals on the tropical pitcher plants of the genus Nepenthes.[1] It was published in 1839 in Coenraad Jacob Temminck's Verhandelingen over de Natuurlijke Geschiedenis der Nederlandsche overzeesche bezittingen.[1] It is generally regarded as the first monograph on Nepenthes.[2][3]

Korthals recognised 9 species: N. ampullaria, N. bongso, N. boschiana, N. distillatoria, N. gracilis, N. gymnamphora, N. madagascariensis, N. phyllamphora (now known as N. mirabilis),[4] and N. rafflesiana.[1] Three of these—N. bongso, N. boschiana, and N. gracilis—were described for the first time, and six were illustrated with hand-coloured lithographs.[1][3]

The six hand-coloured lithographs from Korthals's monograph (left to right): N. ampullaria, N. bongso, N. boschiana, N. gracilis, N. gymnamphora, and N. phyllamphora (N. mirabilis)

References
  1. (in Dutch) Korthals, P.W. 1839. Over het geslacht Nepenthes. In: C.J. Temminck 1839–1842. Verhandelingen over de Natuurlijke Geschiedenis der Nederlandsche overzeesche bezittingen; Kruidkunde. Leiden. pp. 1–44, t. 1–4, 13–15, 20–22.
  2. Clarke, C.M. 1997. Nepenthes of Borneo. Natural History Publications (Borneo), Kota Kinabalu.
  3. Phillipps, A., A. Lamb & C.C. Lee 2008. Pitcher Plants of Borneo. Second Edition. Natural History Publications (Borneo), Kota Kinabalu.
  4. McPherson, S.R. 2009. Pitcher Plants of the Old World. 2 volumes. Redfern Natural History Productions, Poole.
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