Penstemon glaber (Sawsepal Penstemon) is a species of perennial herb in the family Plantaginaceae. They have a self-supporting growth form. They are native to The Contiguous United States. They have simple, simple leaves and purple flowers. Flowers are visited by Halictus, yellowjackets, hornets, and paper wasps, White-lined Sphinx, and Chrysura. Individuals can grow to 0.61 m.
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