The Beardtongues belong to the genus Penstemon, which is also used as a common name for the group. Some sources list Penstemon under the family Scrophulariaceae while others list it under the family Plantaginaceae. There are a many species of native Penstemons. The flowers have a distinctive shape which gives the group the common name Beardtongue. The beardtongues are beautiful flowers that are relatively easy to grow because many species are resistant to drought.
If you would like to learn more about Penstemons a visit to The American Penstemon Society web site is a good place to start.