"Nepenthes hurrelliana" is particularly similar to a form of "N. fusca" from the southern portion of the Crocker Range in Sabah. This form exhibits a wider peristome, longer neck, and a more triangular lid than most other examples of the species. However, the peristome is still not as well developed as in "N. hurrelliana" and the plant lacks the dense indumentum of the latter. Furthermore, "N. hurrelliana" differs in the distribution of nectar glands on the lower surface of its lid.