Kurata recognised 16 species from Mount Kinabalu: N. alata (now known to be endemic to the Philippines), N. ampullaria, N. bicalcarata, N. burbidgeae, N. edwardsiana, N. fusca, N. gracilis, N. lowii, N. mirabilis, N. rafflesiana, N. rajah, N. reinwardtiana, N. stenophylla, N. tentaculata, N. villosa, and an undescribed species (Nepenthes sp.; later described as N. macrovulgaris). Several of these species had not been reported from Kinabalu National Park at the time, but were expected to be found there due to their presence in surrounding areas. Three named natural hybrids were also covered in detail: N. × harryana, N. × hookeriana, and N. × kinabaluensis, the last of which was named by Kurata for the first time in the book. Nepenthes of Mount Kinabalu also made one of the earliest mentions of N. hamata (under the name N. dentata), a species that would be formally described 8 years after the book's publication.