This name is a synonym of Acacia coulteri var. durangensis (Britton & Rose) L. Rico.
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 50184524) with original publication details: Ann. Missouri Bot. Gard. 87(4): 541 2000.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:1141200-2.
This name was in version 1 of The Plant List, record tro-50184524, and has not been changed.