A new species of penstemon (Scrophulariaceae) from southwestern Utah
Penstemon ammophilus, an endemic to Canaan Moutain in Washington Co., Utah, is described and illustrated. On the basis of anther characteristics it is placed in sectionGlabri, seriesVirgati, where it nearly links the group to sectionCristati. It is distinct from all the species of both sections with its peculiar papillose-glandular pubescence.
Shultz, Leila M. and Holmgren, Noel H., "A new species of penstemon (Scrophulariaceae) from southwestern Utah" (1982). Wildland Resources Faculty Publications. Paper 1655.