Penstemon is a large genus and there are well over a dozen species in the Mojave Desert.
Penstemon palmeri is one of the showier, larger-flowered varieties, growing to a height of seven feet. Flowers are pale to dark pink in color and tend to all face in one direction. The five lobes enclose five white stamens, one bearing a prominent cluster of hairs. Plants are found in the higher regions of the desert, between 4,000 and 6,000 feet.
Other species in the plantaginaceae family