In his description of "N. benstonei", Charles Clarke noted two characteristics that he considered unique among "Nepenthes". These were the production of multiple inflorescences and the presence of a thick, waxy cuticle on the leaves. Subsequent field studies have shown that the former is not unique to "N. benstonei", but also occasionally occurs in other "Nepenthes". Likewise, a number of other species, such as "N. hirsuta" from Borneo, are known to produce a waxy cuticle, although it is less developed than in "N. benstonei". Otherwise, "N. benstonei" lacks remarkable characteristics and is distinguished from related species on the basis of its stem, leaves, peristome, lid, indumentum, and glands of the digestive zone.