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