Penstemon Rydbergii, commonly known as Rydberg's penstemon, is a species of flowering plant in the family Plantaginaceae. It is a perennial herb that is native to the Western United States, thriving in a variety of habitats from sagebrush plains to alpine meadows. Synonyms for Penstemon Rydbergii include Penstemon acuminatus subsp. Rydbergii, Penstemon ambiguus, and Penstemon fremontii var. ambiguus. The plant produces vibrant clusters of tubular flowers ranging in color from pink to lavender, attracting pollinators such as butterflies, bees, and hummingbirds. Its medicinal properties have also been documented, with Native American tribes using it for various remedies including toothaches and sore throats.