Penstemon
Penstemon rostriflorus
Penstemon fruticiformis
Penstemon acuminatus
Penstemon davidsonii
Penstemon secundiflorus
Penstemon palmeri
Penstemon fruticosus
Penstemon albidus
Penstemon serrulatus
Penstemon parryi
Penstemon floridus
Penstemon pinorum
Penstemon heterophyllus
Penstemon procerus
Penstemon barbatus
Penstemon calcareus
Penstemon penlandii
Penstemon haydenii
Penstemon calycosus
Penstemon caespitosus
Penstemon deustus
Penstemon attenuatus
Penstemon digitalis
Penstemon rydbergii
Penstemon cyathophorus
Penstemon virgatus
Penstemon teucrioides
Penstemon strictus
Penstemon watsonii
Penstemon ophianthus
Penstemon virens
Penstemon yampaensis
Penstemon tubaeflorus
Penstemon anguineus
Penstemon whippleanus
Penstemon eatonii
Penstemon cyanocaulis
Penstemon cerrosensis
Penstemon laetus
Penstemon barnebyi
Penstemon comarrhenus
Penstemon pennellianus
Penstemon arenicola
Penstemon venustus
Penstemon eriantherus
Penstemon grandiflorus
Penstemon humilis
Penstemon utahensis
Penstemon confertus
Penstemon azureus
Penstemon californicus
Penstemon cyaneus
Penstemon cinicola
Penstemon speciosus
Penstemon franklinii
Penstemon tracyi
Penstemon pinifolius
Penstemon debilis
Penstemon stephensii
Penstemon triflorus
Penstemon linarioides
Penstemon monoensis
Penstemon smallii
Penstemon gracilentus
Penstemon roezlii
Penstemon ambiguus
Penstemon thurberi
Alpine penstemon
Penstemon crandallii
Penstemon gairdneri
Penstemon grahamii
Penstemon caesius
Penstemon gentianoides
Penstemon filiformis
Penstemon personatus
Penstemon australis
Penstemon bicolor
Penstemon auriberbis
Penstemon spectabilis
Penstemon clutei
Penstemon breviculus
Penstemon angustifolius
Penstemon barrettiae
Penstemon rupicola
Penstemon canescens
Penstemon albifluvis
List of Penstemon species
Penstemon moffatii
Penstemon albomarginatus
Penstemon newberryi
Penstemon thompsoniae
Penstemon clevelandii
Penstemon cobaea
Penstemon harringtonii
Penstemon pseudospectabilis
Penstemon richardsonii
Penstemon tenuis
Penstemon brevisepalus
Penstemon heterodoxus
Penstemon centranthifolius
Penstemon pruinosus
Penstemon multiflorus
Penstemon hartwegii
Penstemon arkansanus
Penstemon papillatus
Penstemon laevigatus
Penstemon rhizomatosus
Penstemon pachyphyllus
Penstemon pudicus
Penstemon metcalfei
Penstemon degeneri
Penstemon murrayanus
Penstemon scariosus
Penstemon isophyllus
Penstemon gibbensii
Penstemon neotericus
Penstemon hirsutus
Penstemon purpusii
Penstemon grinnellii
Penstemon tenuiflorus
Penstemon janishiae
Penstemon pallidus
Penstemon scapoides
Penstemon labrosus
Penstemon incertus
Penstemon navajoa
Penstemon pahutensis
Penstemon sudans
Penstemon patens
Showy beardtongue
Desert beardtongue
Foxglove beardtongue
Penstemon osterhoutii
Smooth beardtongue
Mojave beardtongue
Keckiella antirrhinoides
HMS Pentstemon
Graderia subintegra