An updated checklist of the vascular flora of Bryce Canyon National Park is presented, including 458 species arranged in 232 genera and 73 families. Four species have been added to the part list based on 1991 fieldwork: Arabis perennans, Arceuthobium divaricatum, Gentiana parryi, and Haplopappus acaulis. Recent changes in nomenclature have been included, and several species identifications have been corrected. The six largest families are, in decreasing size, Asteraceace, Pocaceae, Fabaceae, Brassicaceae, Scrophulariaceae, and Rosaceae. Common names and an index are provided.
Spence, John R. and Buchanan, Hayle
"1993 update, checklist of the vascular plants of Bryce Canyon National Park, Utah,"
Great Basin Naturalist: Vol. 53
, Article 1.
Available at: http://scholarsarchive.byu.edu/gbn/vol53/iss3/1