This name is a synonym of Valeriana sitchensis subsp. scouleri (Rydb.) F.G. Mey..
The record derives from Tropicos
(data supplied on 2012-04-18)
which reports it as a synonym (record 33500551) with original publication details: Leafl. W. Bot. 2(11): 198–199, f. 3 1939.
Full publication details for this name can be found in IPNI: http://ipni.org/urn:lsid:ipni.org:names:262238-2.
This name was in version 1 of The Plant List, record tro-33500551.