During August, 1967, rust fungi were collected in Colorado, Wyoming, Montana and South Dakota. This field work is being done in connection with taxonomic studies and studies of host ranges and geographic distribution of North American rust fungi. The information obtained will be used in a proposed revision of Arthur's Manual of Rust Fungi. Project Number 101.
Baxter, John W.
"Rust Fungi of the Western United States and Mexico,"
Jackson Hole Research Station Annual Report: Vol. 1967
, Article 4.
Available at: http://repository.uwyo.edu/jhrs_reports/vol1967/iss1/4