Penstemon

Penstemon rydbergii

Rydberg's beardtongue

Penstemon humilis var. humilis

Humble beardtongue

Penstemon leiophyllus var. leiophyllus

Smooth-leaf beardtongue

Penstemon leonardii

Penstemon leonardii var. leonardii

Leonard's beardtongue

Penstemon linarioides var. linarioides

Penstemon glaber

Sawsepal penstemon

Penstemon schaffneri

Penstemon gentryi

Penstemon fasciculatus

Penstemon nitidus

Waxleaf penstemon

Penstemon campanulatus

Bellflower beardtongue

Penstemon tubiflorus

Penstemon vizcainensis

Penstemon vulcanellus

Penstemon gormanii

Penstemon gracilis

Slender beardtongue

Penstemon gentianoides

Gentian beardtongue

Penstemon griffinii

Penstemon × peirsonii