Nepenthes dubia

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Nepenthes dubia (Latin: dubius = doubtful) is a highland Nepenthes pitcher plant species, native to Sumatra. It is closely related to N. inermis, but does not completely lack a peristome in the upper pitchers as in the latter.

Nepenthes dubia holotype (Bünnemeijer 938).

References

• Clarke et al (2000). [Nepenthes dubia]. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 06 May 2006. Listed as Critically Endangered (CR B1+2e, D v2.3)
• Clarke, C. 2001. Nepenthes of Sumatra and Peninsular Malaysia. Natural History Publications (Borneo), Kota Kinabalu, pp. 122-124.