Penstemon

Penstemon albertinus

Alberta beardtongue

Penstemon angustifolius

Broadbeard beardtongue

Penstemon arenicola

Sand penstemon

Penstemon aridus

Stiffleaf penstemon

Penstemon arkansanus

Arkansas beardtongue

Penstemon campanulatus

Bellflower beardtongue

Penstemon canescens

Eastern gray beardtongue

Penstemon cardwellii

Cardwell's beardtongue

Penstemon clevelandii

Cleveland's beardtongue

Penstemon confertus

Yellow beardtongue

Penstemon dasyphyllus

Cochise beardtongue

Penstemon davidsonii

Davidson's penstemon

Penstemon debilis

Penstemon deustus

Hot-rock penstemon

Penstemon eatonii

Eaton's penstemon

Penstemon floridus

Panamint penstemon

Penstemon fremontii

Penstemon fruticiformis

Death valley beardtongue

Penstemon gairdneri

Penstemon acuminatus

Sharpleaf penstemon