Thalictrum columbianum Rydb.Washington: Okanogan County: Loomiston; Mount Chapaca.
In the meadow of the south slope. Abundant. Phenology: Fruiting.
Isotype: Thalictrum columbianum Rydb.. Published 1912. Bull. Torrey Bot. Club 39: 320. 1912.A. D. E. Elmer 599, Aug 1897
RM, Accession: 12033, Barcode: RM0003649