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