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.
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Holmgren, N.H., Shultz, L.M. A new species of penstemon (Scrophulariaceae) from southwestern Utah. Brittonia 34, 381–383 (1982). https://doi.org/10.2307/2806493