Entry from US English dictionary
A North American plant of the figwort family with showy, five-lobed flowers. Each blossom has a tuft of hair on one of its stamens.
- Genus Penstemon, family Scrophulariaceae: several species, including hairy beardtongue (P. hirsutus) and the widespread foxglove beardtongue (P. digitalis)
Definition of beardtongue in: