Dayton, W.A. 1960. Notes on western range forbs: Equisetaeae through Fumariaceae. Washington, DC: U.S. Department of Agriculture, Forest Service. 254 p.

Dayton, W.A. 1960. Notes on western range forbs: Equisetaeae through Fumariaceae. Washington, DC: U.S. Department of Agriculture, Forest Service. 254 p.