Logan Canyon. Guinavah-Malibu Campground site. (This area is currently under construction and is mostly disturbed flats dominated by weeds--Arctium, Isatis, etc).
Longitude (DD)
-111.6989283
Latitude (DD)
41.76193667
Elevation (m)
1540
Habitat
On Elymus growing In open disturbed ground, in partial shade of Fraxinums, with Verbascum thapsus, Melilotus, Dactylis, etc. This plant was heavily infected, but I didn't notice any other infected plants.
Voucher image
Photos posted on iNaturalist: https://www.inaturalist.org/observations/228092018.