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 33500553) with original publication details: Flora 20(2): 450 1837.
This name was in version 1 of The Plant List, record tro-33500553.