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