Nepenthes dubia
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Nepenthes dubia is a tropical pitcher plant endemic to the Indonesian island of Sumatra, where it grows at an altitude of 1600–2700 m above sea level. The specific epithet dubia is the Latin word for "doubtful".
An upper pitcher
A young climbing plant in mossy forest at around 1600 m
Numerous plants growing among stunted ridgetop vegetation
Nepenthes tenuis
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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 undescribed until 1994, and was only rediscovered in the wild in 2002. Prior to this, N. tenuis was known solely from a single photograph and dried herbarium specimen.
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.
An aerial pitcher clasping a branch for support
A young rosette plant