Included here is virtually all of North America’s Great Basin together with the Snake River Plains, the Uinta Basin and a large part of the Colorado Plateau.
Of the endemic and near endemic vascular plants so far recorded there about 377 species, subspecies and varieties in 116 genera and 38 families. There is one endemic genus (marked red) so far recorded. However, this list is likely to be incomplete and there are reports of a few endemic genera.
This list has been compiled with the help of Ed Alverson (Oregon).
Buchanan, H. & Graybosch, R. 1981. Revised checklist of the vascular plants of Bryce Canyon National Park, Utah. Great Basin Naturalist, 41: 109-120.
Ertter, B, & Moseley, R. 1992. Floristic Regions of Idaho. Journal of the Idaho Academy of Science, 28: 1-15.
Graybosch, R. A. & Buchanan, H. 1983. Vegetative types and endemic plants of the Bryce Canyon Breaks. Great Basin Naturalist, 43: 701-712.
Welsh, S. L., Atwood, N. D. & Reveal, J. L. 1975. Endangered, threatened, extinct, endemic, and rare or restricted Utah vascular plants. The Great Basin Naturalist, 35: 372-376.
Welsh, S. L., Atwood, N. D. & Murdock, J. R. 1978. Kaiparowits Flora. The Great Basin Naturalist, 38: 125-179.