[4] In 1988, Anthea Phillipps and Anthony Lamb published an illustration of a N. hurrelliana specimen from Mount Murud under the name "N. veitchii × N. fusca".

[7] In "Nepenthes of Gunung Murud", an article published in a 1996 issue of the Carnivorous Plant Newsletter, John De Witte describes a hybrid "most probably between N. veitchii and N. stenophylla[a] or N. fusca",[9] which likely represents this species.

[2] The type specimen, A.Lamb & Surat 145/99, was collected on Mount Lumarku in Sabah and is deposited at the herbarium of the Forest Department, Sandakan (SAN).

[11] Plants from Mount Mulu produce more narrowly lanceolate leaves with broadly winged petioles that are decurrent down the entire internode (≤10 cm long).

[11] Nepenthes hurrelliana is endemic to Borneo, where it has been recorded from a number of mountains in northern Sarawak, southwestern Sabah, and Brunei.

[11] On Mount Murud (2423 m), N. hurrelliana is common on the summit ridge above 2100 m, but becomes rarer with increasing elevation as this brings with it more stunted and exposed vegetation.

One of the most conspicuous examples is a small golden-coloured frog of the genus Philautus, which has been observed in the pitchers of epiphytic N. hurrelliana on Mount Lumarku.

Botanist Clive A. Stace writes that one may speak of "stabilised hybrids when they have developed a distributional, morphological or genetic set of characters which is no longer strictly related to that of its parents, [...] if the hybrid has become an independent, recognisable, self-producing unit, it is de facto a separate species".

[14] This would support the status of N. hurrelliana as a species since populations of this taxon appear to be stabilised and it is abundant where it does grow.

The upper pitchers of N. hurrelliana differ in having a horizontal mouth that rises abruptly into a long neck at the back and in having a hirsute basal crest on the underside of the lid.

[6] In his Carnivorous Plant Database, taxonomist Jan Schlauer lists N. hurrelliana as a possible hybrid between N. veitchii and N. stenophylla (as distinct from N. fallax).

[10][a] The attenuate leaf attachment and dense indumentum of N. hurrelliana are reminiscent of N. mollis and it has been suggested that the two species may be conspecific.

[7] An editor's note by Jan Schlauer accompanying Salmon's article cautions that specimens from the type locality of N. mollis must be examined before the two taxa are united:[5] The identity of the specimens from G. Lumarku with N. mollis should be proven by comparison with authentic pitchered material from G. Kemul.