Mount Callahan and Mount Callahan Saddle

Location:   Garfield County
Size:   360 acres
Designated:   1987
Landowner:   Private

The Mt. Callahan Natural Area contains high quality remnants of Great Basin grasslands and barren communities and supports populations of three rare plant species: Roan Cliffs blazing star (Mentzelia rhizomata), sun-loving meadowrue (Thalictrum heliophilum) and Parachute penstemon (Penstemon debilis). All species are endemic to Green River Shale. Mt. Callahan is the type locality for Penstemon debilis, which is a candidate for federal listing as threatened.