Named as a new species is Penstemon albifluvis J. L. England. The species is known from the Uinta Basin of Utah and Colorado.
England, John Larry
"A new species of Penstemon (Scrophulariaceae) from the Uinta Basin of Utah and Colorado,"
Great Basin Naturalist: Vol. 42
, Article 7.
Available at: https://scholarsarchive.byu.edu/gbn/vol42/iss3/7