Orobanche ludoviciana Nutt. var. ludoviciana
Annotated by L. R. Heckard, 1970.

Montana: Custer County: Pasture 2-B, USRL Exp. Sta.; near Tongue River. Elev. 2400 ft.
46.291669° N, 105.8338886° W
Coordinate Source: USGS-website.
Slope: Level river bottom; Soil: Sandy clay loam; Type: Sagebrush-grass; Use: Moderate; Distribution: General in sagebrush type; Abundance: Moderate; Other data: Occurs near sagebrush plants. Herbarium of the Forest Service, U.S. Department of Agriculture. Phenology: Flowers.

E. J. Woolfolk W-143, Jul 20, 1938
MONTU, Accession: 46558