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. Bruce Salmon wrote that the type specimen of N. mollis differs from the Mount Lumarku form of N. hurrelliana in lacking bracteate pedicels and in having a decurrent leaf base with wings up to 6 cm long (as opposed to 1 to 2 cm in N. hurrelliana).