Penstemon

Penstemon jaliscensis

Penstemon minutifolius

Penstemon multiflorus

Penstemon kralii

Penstemon bleaklyi

Penstemon saltarius

Penstemon × moronensis

Penstemon campanulatus var. campanulatus

Penstemon campanulatus var. chihuahuensis

Penstemon vizcainensis

Penstemon gentianoides

Gentian beardtongue

Penstemon gracilis

Slender beardtongue

Penstemon glaber var. glaber

Penstemon nitidus var. nitidus

Penstemon glaber var. brandegeei

Penstemon xylus

Penstemon metcalfei

Penstemon grandiflorus

Large beardtongue

Penstemon cobaea var. cobaea

Penstemon montanus var. montanus