This name is a synonym of Espostoa senilis (F.Ritter) N.P.Taylor.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 5101871) with original publication details: Kakteen And. Sukk. 6: 89 1961.
This name was in version 1 of The Plant List, record tro-5101871, and has not been changed.