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