This name is a synonym of Pilosocereus leucocephalus (Poselger) Byles & G.D. Rowley.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5102862) with original publication details: Allg. Gartenzeitung 21(16): 126 1853.
This name was in version 1 of The Plant List, record tro-5102862.