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