Penstemon

Penstemon x 'Pink Holly'

Penstemon acaulis

Penstemon alamosensis

Penstemon albertinus

Penstemon albidus

Penstemon ambiguus

Penstemon angustifolius

Penstemon arenicola

Penstemon aridus

Penstemon azureus

Penstemon caespitosus

Penstemon caespitosus var desertipicti

Penstemon californicus

Penstemon cardwellii 'Roseus'

Penstemon carnosus

Penstemon clutei

Penstemon cobaea

Penstemon confertus

Penstemon cyananthus

Penstemon cyananthus v subglaber

Penstemon davidsonii var menziesii

Penstemon davidsonii var praeteritus

Penstemon dolius

Penstemon duchesnensis

Penstemon eatonii

Penstemon ellipticus

Penstemon eriantherus

Penstemon fruticosus

Penstemon fruticosus 'Purple Haze'

Penstemon fruticosus var scoulei 'Alba'

Penstemon gracilis

Penstemon hallii

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