Conservation Status
The conservation status of N. sumatrana is listed as Least Concern on the 2006 IUCN Red List of Threatened Species. However, it has not been re-evaluated since 2000 and treats N. longifolia in synonymy with N. sumatrana. Recent studies have shown that these two taxa are distinct species.
In 2001, based on first hand observations of wild populations, Charles Clarke informally reclassified N. sumatrana as Critically Endangered according to the IUCN criteria. Clarke notes that N. sumatrana seems to be unable to survive in disturbed habitats. As such, rapid development around Sibolga poses a particularly serious threat to the survival of the species in the wild. In comparison, the threat of over-collection is relatively small, since many plants grow on very steep slopes which are virtually inaccessible. Taxonomic confusion concerning N. sumatrana and closely related species such as N. beccariana and N. longifolia makes the implementation of new conservation projects all but unfeasible.
Read more about this topic: Nepenthes Sumatrana
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