They are not even N. rajah, they are N.x kinabaluensis the hybrid between the
two.  There are two good N. villosa pictures on p. 105, the other is N. x
kinabaluensis.  The same goes for p. 101.  There is 1 good picture of N.
rajah (bottom right)  the other is N. x kinabaluensis.  Even the ID of the
plants labled as N. gymnamphora is very questionable.
Christoph