A new species, Mentzelia (sect. Bartonia) cronquistii, subfamily Mentzelioideae, is described and a new combination, M. (sect. Bartonia) marginata (Osterhout) is made. These two species of the Colorado Plateau are closely related to each other, but their relationships to other species in section Bartonia are obscure.
Thompson, H. and Prigge, B.
"New species and a new combination of Mentzelia section Bartonia (Loasaceae) from the Colorado Plateau,"
Great Basin Naturalist: Vol. 46
, Article 23.
Available at: http://scholarsarchive.byu.edu/gbn/vol46/iss3/23