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 381194) with original publication details: Mitt. Deutsch. Dendrol. Ges. 16: 257 1907.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:211588-2.
This name was in version 1 of The Plant List, record kew-2577301.