Described as new are six critical species and one variety of Erigeron from Utah. They are E. awapensis Welsh, E. canaani Welsh, E. carringtonae Welsh, E. goodrichii Welsh, E. maguirei Cronq. var. harrisonii Welsh, E. untermannii Welsh and Goodrich, and E. wahwahensis Welsh.
Welsh, Stanley L.
"A bouquet of daisies (Erigeron, Compositae),"
Great Basin Naturalist: Vol. 43
, Article 3.
Available at: http://scholarsarchive.byu.edu/gbn/vol43/iss2/3