A review of new data relating to Nepenthes insignis in Indonesia indicates that three taxa in section Insignes, not one, are present in New Guinea. One of these, endemic to the limestone of the island of Biak, is formally named as Nepenthes biak and assessed as Critically Endangered; the other, from limestone of the Raja Ampat islands is provisionally distinguished as Nepenthes sp. Raja Ampat, since only images are available.

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Blumea: Biodiversity, Evolution and Biogeography of Plants

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Naturalis journals & series

Cheek, M., Jebb, M., Murphy, B., & Mambor, F. (2018). Nepenthes section Insignes in Indonesia, with two new species. Blumea: Biodiversity, Evolution and Biogeography of Plants, 62, 174–178. doi:10.3767/blumea.2018.62.03.03