File:Nepenthes papuana.PNG

Nepenthes papuana herbarium specimens: a. & b. parts of a female plant (Docters van Leeuwen 10341), c. rosette of the same plant, d. male raceme (Docters van Leeuwen 10340).

Source: Danser, B. H. 1928. The Nepenthaceae of the Netherlands Indies. Bulletin de Jardin de Botanique, Buitenzorg, Série III, 9 (3-4):249-438.