Elevation - 3,000 to 6,600 feet. Slope - 0 to 60 percent. Mean annual precipitation - 14 to 19 inches. Potential native vegetation is mainly needleandthread, western wheatgrass, bluebunch wheatgrass, prairie junegrass, blue grama, forbs, and some shrubs. Widely distributed over state of Montana and in Colorado.
Series is of moderate extent.
Martinsdale soils have a frigid temperature regime and an ustic moisture regime.