Despite this, Matthew Jebb and Martin Cheek did not distinguish the East Malaysian plants from N. pilosa in their monograph published the same year. Similarly, in Pitcher-Plants of Borneo (1996), Anthea Phillipps and Anthony Lamb treated plants from Mount Alab, Crocker Range, as N. pilosa, following the interpretation of J. R. Turnbull and A. T. Middleton in an unpublished mimeograph report from 1981.