Penstemon cobaea Nutt. - cobaea beardtongue - photo: James L. Reveal
Penstemon fendleri Torr. & Gray - Fendler's penstemon
Penstemon acaulis L.O. Williams - stemless beardtongue - photo: Robert D. Dorn
Penstemon guadalupensi Heller
- Guadalupe beardtongue - photo: James L. Reveal
Penstemon triflorus Heller - Heller's beardtongue - photo: James L. Reveal
Penstemon pahutensis N. Holmgren - Paiute beardtongue - photo: James L. Reveal
Penstemon rydbergii A. Nels. - Rydberg's penstemon - photo: James L. Reveal
Penstemon purpusii Brandeg. - Snow Mountain beardtongue - photo: James L. Reveal
Penstemon canescens (Britt.) Britt. - eastern gray beardtongue - photo: William S. Justice
Penstemon australis Small - Eustis Lake beardtongue - photo: William S. Justice
Penstemon hirsutus (L.) Willd. - hairy beardtongue
Penstemon pudicus Reveal & Beatley - Kawich Range beardtongue - photo: James L. Reveal
Penstemon superbus A. Nels. - superb beardtongue
Penstemon digitalis Nutt. ex Sims - talus slope penstemon - photo: William S. Justice
Penstemon bracteatus Keck - Red Canyon beardtongue - photo: James L. Reveal
Penstemon grahamii Keck - Uinta Basin beardtongue - photo: J.S. Peterson