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 5106592) with original publication details: Kaktus-ABC 232 1935.
⥇ A cross-taxon basionym link was ignored while processing this record,
see Cephalocereus maxonii Rose.
This name was in version 1 of The Plant List, record tro-5106592.