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