"The Nepenthaceae of the Netherlands Indies" is a seminal monograph by B. H. Danser on the tropical pitcher plants of the Dutch East Indies and surrounding regions. It was originally published in the Bulletin du Jardin Botanique de Buitenzorg in 1928, and reprinted by Natural History Publications (Borneo) in 2006. Content Danser focused on species native to the Dutch East Indies, North Borneo, the Malay Peninsula, and eastern New Guinea (an area roughly corresponding to Malesia minus the Philippines); species from outlying areas were only mentioned in the general discussion. Danser recognised 65 species in total, of which 52 were given detailed treatments. This number included 17 newly described taxa: N. carunculata (later synonymised with N. bongso), N. clipeata, N. dubia, N. ephippiata, N. fusca, N. inermis, N. insignis, N. leptochila (later synonymised with N. hirsuta), N. mollis, N. paniculata, N. papuana, N. pectinata (later synonymised with N. gymnamphora), N. petiolata, N. pilosa, N. spectabilis, N. tobaica, and N. tomoriana. All were described in great detail, with many accompanied by line drawings. Danser synonymised N. edwardsiana with N. villosa, N. hemsleyana with N. rafflesiana, and N. ramispina with N. gracillima; all three were later reinstated as valid species. Following this exhaustive revision of the genus, Danser described only two more Nepenthes species: Nepenthes spathulata in 1935 and Nepenthes densiflora in 1940, with both descriptions also published in the Bulletin du Jardin Botanique de Buitenzorg. Species Danser recognised the following 65 taxa as valid species (though some, such as N. oblanceolata, only tentatively so). The 13 taxa denoted with an asterisk (*) fall outside the monograph's geographical focus and are only mentioned in its general discussion. N. alata N. albomarginata N. ampullaria N. anamensis * N. bicalcarata N. bongso N. boschiana N. burbidgeae N. burkei * N. carunculata N. clipeata N. deaniana * N. decurrens N. distillatoria * N. dubia N. ephippiata N. fusca N. geoffrayi * N. gracilis N. gracillima N. gymnamphora N. hirsuta N. hookeriana N. inermis N. insignis N. kampotiana * N. khasiana * N. klossii N. leptochila N. lowii N. macfarlanei N. madagascariensis * N. maxima N. merrilliana N. mirabilis N. mollis N. neglecta N. neoguineensis N. northiana N. oblanceolata N. paniculata N. papuana N. pectinata N. pervillei * N. petiolata N. philippinensis * N. pilosa N. rafflesiana N. rajah N. reinwardtiana N. sanguinea N. singalana N. spectabilis N. stenophylla N. tentaculata N. thorelii * N. tobaica