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Penstemon azureus

Azure penstemon

Penstemon breviculus

Penstemon caesius

Gomphogyne cissiformis

Penstemon calcareus

Limestone beardtongue

Penstemon calycosus

Longsepal beardtongue

Penstemon bicolor

Abelia chinensis var. aschersoniana

Penstemon confusus

Penstemon cyanocaulis

Penstemon × crideri

Penstemon deaveri

Penstemon degeneri

Penstemon diphyllus

Penstemon dissectus

Penstemon comarrhenus

Penstemon cyananthus

Wasatch penstemon

Penstemon cyaneus

Blue penstemon

Penstemon cyathophorus

Sagebrush beardtongue

Penstemon deamii