Nepenthes tenuis is a tropical pitcher plant endemic to the Indonesian island of Sumatra. The species was first collected in 1957, from a remote mountain in the western part of the island. It remained
Prior to the rediscovery of N. tenuis in the wild, this was the only known photograph of the species. It shows a fragment of a climbing stem and an upper pitcher.
Nepenthes of Sumatra and Peninsular Malaysia is a monograph by Charles Clarke on the tropical pitcher plants of Sumatra, Peninsular Malaysia, and their minor surrounding islands. It was published in 2