This name is a synonym of Armatocereus rauhii subsp. balsasensis (F.Ritter) Ostolaza.
The record derives from WCSP (in review)
(data supplied on 2012-03-23)
which reports it as a synonym with original publication details: Kakteen Südamer. 4: 1271 1981.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:272669-2.
This name was in version 1 of The Plant List, record kew-2652154, and has not been changed.