Penstemon hybrids and unidentified species
Penstemon abietinus
Penstemon absarokensis
Penstemon acaulis
Penstemon acuminatus
Penstemon alamosensis
Penstemon albertinus
Penstemon albidus
Penstemon albomarginatus
Penstemon alluviorum
Penstemon alpinus
Penstemon ambiguus
Penstemon ammophilus
Penstemon amphorellae
Penstemon angelicius
Penstemon anguineus
Penstemon angustifolius
Penstemon arenarius
Penstemon arenicola
Penstemon aridus
Penstemon arkansanus
Penstemon attenuatus
Penstemon atwoodii
Penstemon auriberbis
Penstemon australis
Penstemon azureus
Penstemon baccharifolius
Penstemon barbatus
Penstemon barnebyi
Penstemon barrettiae
Penstemon bicolor
Penstemon bleaklyi
Penstemon bolanius
Penstemon bracteatus
Penstemon brandegeei
Penstemon breviculus
Penstemon bridgesii
Penstemon bryantiae
Penstemon buckleyi
Penstemon caesius
Penstemon caespitosus
Penstemon calcareus
Penstemon californicus
Penstemon calycosus
Penstemon campanulatus
Penstemon canescens
Penstemon cardinalis
Penstemon cardwellii
Penstemon carnosus
Penstemon caryi
Penstemon centranthifolius
Penstemon cerrosensis
Penstemon cinicola
Penstemon cleburnei
Penstemon clevelandii
Penstemon clutei
Penstemon cobaea
Penstemon comarrhenus
Penstemon compactus
Penstemon concinnus
Penstemon confertus
Penstemon confusus
Penstemon coriaceus
Penstemon crandallii
Penstemon cusickii
Penstemon cyananthus
Penstemon cyaneus
Penstemon cyanocaulis
Penstemon cyathophorus
Penstemon dasyphyllus
Penstemon davidsonii
Penstemon deamii
Penstemon deaveri
Penstemon debilis
Penstemon degeneri
Penstemon deustus
Penstemon digitalis
Penstemon diphyllus
Penstemon discolor
Penstemon dissectus
Penstemon distans
Penstemon dolius
Penstemon duchesnensis
Penstemon eatonii
Penstemon elegantulus
Penstemon ellipticus
Penstemon eriantherus
Penstemon euglaucus
Penstemon exilifolius
Penstemon eximeus
Penstemon fasciculatus
Penstemon fendleri
Penstemon filiformis
Penstemon filisepalis
Penstemon flavescens
Penstemon floribundus
Penstemon floridus
Penstemon flowersii
Penstemon franklinii
Penstemon fremontii
Penstemon fruticiformis
Penstemon fruticosus
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Penstemon gairdneri
Penstemon gentianoides
Penstemon gentryi
Penstemon gibbensii
Penstemon glaber
Penstemon glabrescens
Penstemon glandulosus
Penstemon glaucinus
Penstemon globosus
Penstemon gloxinioides
Penstemon goodrichii
Penstemon gormanii
Penstemon gracilentus
Penstemon gracilis
Penstemon grahamii
Penstemon grandiflorus
Penstemon griffinii
Penstemon grinnellii
Penstemon guadalupensis
Penstemon hallii
Penstemon harbourii
Penstemon harringtonii
Penstemon hartwegii
Penstemon havardii
Penstemon haydenii
Penstemon hendricksonii
Penstemon heterodoxus
Penstemon heterophyllus
Penstemon hidalgensis
Penstemon higginsii
Penstemon hintonii
Penstemon hirsutus
Penstemon humilis
Penstemon hyacinthiflora
Penstemon hybrida
Penstemon × iapas
Penstemon idahoensis
Penstemon imberbis
Penstemon immanifestus
Penstemon incertus
Penstemon inflatus
Penstemon isophyllus
Penstemon jamesii
Penstemon janishiae
Penstemon kingii
Penstemon kralii
Penstemon kunthii
Penstemon labrosus
Penstemon laetus
Penstemon laevigatus
Penstemon laevis
Penstemon lanceolatus
Penstemon laricifolius
Penstemon laxiflorus
Penstemon laxus
Penstemon leiophyllus
Penstemon lemhiensis
Penstemon lentus
Penstemon leonardii
Penstemon leonensis
Penstemon leptanthus
Penstemon linarioides
Penstemon longiflorus
Penstemon lyallii
Penstemon marcusii
Penstemon mensarum
Penstemon menziesii
Penstemon × mesa
Penstemon metcalfei
Penstemon × mexicali
Penstemon miniatus
Penstemon miser
Penstemon moffatii
Penstemon mohinoranus
Penstemon monoensis
Penstemon montanus
Penstemon moriahensis
Penstemon moronensis
Penstemon mucronatus
Penstemon multiflorus
Penstemon murrayanus
Penstemon nanus
Penstemon navajoa
Penstemon neomexicanus
Penstemon neotericus
Penstemon newberryi
Penstemon nitidus
Penstemon nudiflorus
Penstemon occiduus
Penstemon oklahomensis
Penstemon oliganthus
Penstemon ophianthus
Penstemon oreocharis
Penstemon osterhoutii
Penstemon ovatus
Penstemon pachyphyllus
Penstemon pahutensis
Penstemon pallidus
Penstemon palmeri
Penstemon papillatus
Penstemon parishii
Penstemon parryi
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Penstemon parviflorus
Penstemon parvulus
Penstemon parvus
Penstemon patens
Penstemon patricus
Penstemon payettensis
Penstemon paysoniorum
Penstemon peckii
Penstemon penlandii
Penstemon pennellianus
Penstemon perfoliatus
Penstemon perpulcher
Penstemon personatus
Penstemon petiolatus
Penstemon pinifolius
Penstemon pinorum
Penstemon plagapineus
Penstemon platyphyllus
Penstemon potosinus
Penstemon pratensis
Penstemon procerus
Penstemon procumbens
Penstemon pruinosus
Penstemon pseudoparvus
Penstemon pseudoputus
Penstemon pseudospectabilis
Penstemon pudicus
Penstemon pulchellus
Penstemon pumilus
Penstemon punctatus
Penstemon purpusii
Penstemon putus
Penstemon radicosus
Penstemon ramaleyi
Penstemon ramosus
Penstemon rattanii
Penstemon retrorsus
Penstemon rhizomatosus
Penstemon richardsonii
Penstemon roezlii
Penstemon rostriflorus
Penstemon rotundifolius
Penstemon rubicundus
Penstemon rupicola
Penstemon rydbergii
Penstemon saltarius
Penstemon saxosorum
Penstemon scapoides
Penstemon scariosus
Penstemon schmidel
Penstemon scouleri
Penstemon secundiflorus
Penstemon seorsus
Penstemon sepalulus
Penstemon serrulatus
Penstemon skutchii
Penstemon smallii
Penstemon spatulatus
Penstemon speciosus
Penstemon spectabilis
Penstemon stenophyllus
Penstemon stephensii
Penstemon strictiformis
Penstemon strictus
Penstemon subglaber
Penstemon subserratus
Penstemon subulatus
Penstemon sudans
Penstemon superbus
Penstemon tenuiflorus
Penstemon tenuifolius
Penstemon tenuis
Penstemon tepicensis
Penstemon ternatus
Penstemon teucrioides
Penstemon thompsoniae
Penstemon thurberi
Penstemon tidestromii
Penstemon tiehmii
Penstemon tolmiei
Penstemon tracyi
Penstemon triflorus
Penstemon triphyllus
Penstemon tubaeflorus
Penstemon tusharensis
Penstemon uintahensis
Penstemon unilateralis
Penstemon utahensis
Penstemon venustus
Penstemon versicolor
Penstemon virens
Penstemon virgatus
Penstemon viscainensis
Penstemon vulcanellus
Penstemon wardii
Penstemon washingtonensis
Penstemon watsonii
Penstemon whippleanus
Penstemon wilcoxii
Penstemon wislizeni
Penstemon wrightii
Penstemon yampaensis
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