[PCA] White Pine Blister Rust Brochure
John Guyon
jguyon at fs.fed.us
Fri Jun 3 11:52:41 CDT 2005
Greetings to all on this list. I would appreciate critical review and
distribution of the White Pine Blister Rust brochure found at:
http://www.fs.fed.us/r1-r4/spf/fhp/index.html
A downloadable PDF can be found in the "What's New" section.
The host species at risk to the non-native disease white pine blister rust
include whitebark pine, which has a well established conservation
strategy, as well as rocky mountain bristlecone pine and great basin
bristlecone pine. White pine blister rust was discovered last year for the
first time on Rocky Mountain bristlecone in Colorado, and the rust has
recently jumped to a mountain range within about 50 miles of the northern
edge of the distribution of great basin bristlecone in Nevada, also placing
that species at risk.
And a question for you folks, is there any precedent for placing a plant
disease on lists of plants/fungi in need of protection as a rare fungus?
The native plant disease white spored gall rust is only found in one
location in the Spring Mountains in Nevada (and possibly a couple other
unconfirmed locations). One of the two populations was nearly wiped out in
a suppression effort in the 1970's, and I think the other population,
isolated in one canyon, is worthy of protection as a rare fungus.
Thanks, JCG
John Guyon
Forest Pathologist
Ogden Field Office
Forest Health Protection, Region 4
USDA Forest Service
801-476-4420
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