茂物植物园
"Nepenthes insignis" was collected again in September 1926, by Willem Marius Docters van Leeuwen. The specimens, "Docters van Leeuwen 10258" and "10286", were collected in northwestern New Guinea at the "[b]order of affluent C of the Rouffaer River" at an altitude of 250 m. They are also deposited at the Bogor Botanical Gardens, although they do not include floral material.