Epilobium drummondi var. latiusculum Rydb.
Annotated by Rydberg. Remarks: Catalogue of the Flora of Montana and the Yellowstone National Park. P. 276.

Idaho: Fremont County: Henry's Lake and Mt. Chauvet. Elev. 10000 ft.
Phenology: Flowers. Type specimen (basionym and designation not recorded).

P. A. Rydberg 4559, Jul 31, 1897
With Ernst A. Bessey
MONT, Accession: 5142