 | Notes on western range forbs | (2) |
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 | Notes on Western range forbs : Cruciferae through Compositae / by F.J. Hermann. Hermann, F. J. (Frederick Joseph), 1906- 4n Washington, D.C. : Forest Service, U.S. Dept. of Agriculture, 1966. | |
| Notes on western range forbs : Equisetaceae through Fumariaceae / by William A. Dayton. Dayton, William A. (William Adams), 1885- 4n Washington, D.C. : Forest Service, U.S. Dept. of Agriculture, 1960. | |
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