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