This is a list of the species in the genus Penstemon. They are commonly called penstemons or beardtongues in English, and species will often have a common name based on both of these names. As the subgenuses have some taxonomic uncertainty, the species are arranged alphabetically by name in the lists. As of 2024[update] there are 281 species and seven natural hybrids, according to Plants of the World Online (POWO).[1] The database World Flora Online (WFO) regards all the species listed by POWO as valid, but additionally lists two natural hybrids as species and five additional species as valid.[2]