This name is a synonym of Pseudotsuga menziesii var. glauca (Beissn.) Franco.
The record derives from WCSP
(data supplied on 2012-03-23)
which reports it as a synonym (record 381579) with original publication details: J. Int. Conifer Preserv. Soc. 15: 62 2008.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:77092591-1.
This name was in version 1 of The Plant List, record kew-2608398.