Populus ×brayshawii Boivin
Annotated by Peter Lesica, 21 Oct 2010.

Montana: Gallatin County: Three Forks R. Station, Flathead Forest. Elev. 4400 ft.
45.882706° N, 111.5516368° W
Coordinate Source: USGS-website.
Common name: Black Cottonwood; Slope: Level; Soil: coarse gravel; Type: Browse. Used Three Forks (locale) for lat/long. No county listed on label, got Gallatin Co. from USGS website. Herbairum of the Forest Service, U.S. Department of Agriculture. Phenology: Vegetative.

Frank F. Liebig s.n., Jul 7, 1936
MONTU, Accession: 102931