This name is a synonym of Espostoa lanata (Kunth) Britton & Rose.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5106560) with original publication details: Cactus 113 1930.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:52139-2.
This name was in version 1 of The Plant List, record tro-5106560, and has not been changed.