Nepenthes inermis

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Nepenthes inermis (Latin: inermis = unarmed) is a highland Nepenthes pitcher plant species, native to Sumatra. It is closely related to N. dubia, but completely lacks a peristome in its upper pitchers unlike the latter. The pitchers are also usually green, while those of N. dubia tend to be yellow to orange in colour.

Herbarium specimens of N. inermis (including holotype).

References

• Schnell, D., Catling, P., Folkerts, G., Frost, C., Gardner, R., et al. (2000). [Nepenthes inermis]. 2006 IUCN Red List of Threatened Species. IUCN 2006. Retrieved on 11 May 2006. Listed as Vulnerable (VU A1c v2.3)
• Clarke, C. 2001. Nepenthes of Sumatra and Peninsular Malaysia. Natural History Publications (Borneo), Kota Kinabalu, pp. 142-145.

Upper pitcher.