Penstemon laetus

Penstemon laetus is a species of penstemon in the Plantaginaceae (Plantain) family known by the common names Gay Penstemon and Mountain Blue Penstemon. It is native to the inland mountains of Oregon and California, where its distribution extends from the Klamath Mountains through the Sierra Nevada to the Transverse Ranges. It is found at elevations from 750 ft. to over 8,000 ft. where grows in forest, scrub, and other mountain habitats. It is a perennial herb growing erect to about 75 centimeters tall, its base becoming woody. The leaves are linear to lance-shaped and up to 10 centimeters long. The hairy flower cluster bears blue or purple flowers up to 3.5 centimeters long. The wide-mouthed tubular or funnel-shaped flower is hairy on the outer surface and mostly hairless on the inside. There are two recognized varieties in California, all commonly known as Mountain Blue Penstemon.