Related Species
Nepenthes burbidgeae is easily distinguished from other species in the genus on the basis of its pitcher shape and colouration, as well as the hook-shaped appendage on the underside of the lid. The only other Bornean Nepenthes species with a similarly developed appendage are N. chaniana and N. pilosa.
B. H. Danser suggested that N. burbidgeae is most closely related to N. pilosa. The latter species is poorly known and was for a long time confused with N. chaniana.
The glandular crest of N. chaniana is very similar to that of N. burbidgeae, particularly in upper pitchers. However, it is difficult to confuse these species as the pitchers are otherwise markedly different in structure; the upper pitchers of N. burbidgeae are short and funnel-shaped, whereas those of N. chaniana are elongated and have a dense indumentum of white hair.
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