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Penstemon
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Penstemon harbourii
Penstemon heterophyllus
Penstemon hirsutus
Penstemon hirsutus 'Pygmaeus'
Penstemon humilis brevifolius
Penstemon humilis v brevifolius
Penstemon immanifestus
Penstemon laricifolius
Penstemon linariodes compactifolius
Penstemon lyallii
Penstemon montanus
Penstemon montanus v montanus
Penstemon nanus
Penstemon nitidus
Penstemon ovatus
Penstemon pachyphyllus
Penstemon paysonorum
Penstemon pinifolius
Penstemon pinifolius 'Magdalena Sunshine'
Penstemon pinifolius 'Marsea Yellow'
Penstemon procerus
Penstemon procerus v tolmiei 'Alpenglow'
Penstemon procerus var formosus
Penstemon pruinosus
Penstemon pumilus
Penstemon rydbergii
Penstemon saxosorum
Penstemon scariosus var cyanomontanus
Penstemon secundiflorus
Penstemon serrulatus
Penstemon serrulatus 'Albus'
Penstemon speciosus var kennedyi
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