aka Rock Penstemon, Cliff Beardtongue. A dazzling display of color against bare rock. P. rupicola forms dense shrubby mats not more than 6″ (15 cm) tall with evergreen leaves. The tubular flowers are 1″ – 1.5″ long and are brillant possessing almost a neon pink color. Woody branches have small, 1/3″ – 2/3″, leaves which are round or oval, leathery, glaucous and gray-green in color. Usually found on rock ledges and outcrops at between 5,000′ to 8,000′ elevation.