Penstemon brevisepalus, Penstemon franklinii, Penstemon schaffneri, Penstemon saltarius, Penstemon moronensis, Penstemon inflatus, Penstemon pseudoparvus, Penstemon oklahomensis, Penstemon nitidus, Penstemon campanulatus, Penstemon tubiflorus, Penstemon vizcainensis, Penstemon vulcanellus, Penstemon gormanii, Penstemon gracilis, Penstemon gentianoides, Penstemon xylus, Penstemon superbus, Penstemon griffinii, Penstemon metcalfei, Penstemon wendtiorum, Penstemon dubius, Penstemon albidus, Penstemon ambiguus, Penstemon angustifolius, Penstemon auriberbis, Penstemon buckleyi, Penstemon clutei, Penstemon cobaea, Penstemon digitalis, Penstemon fendleri, Penstemon glaber, Penstemon haydenii, Penstemon jamesii, Penstemon laxiflorus, Penstemon pallidus, Penstemon procerus, Penstemon serrulatus, Penstemon tubaeflorus, Penstemon virens, Penstemon imberbis, Penstemon abietinus, Penstemon acaulis, Penstemon acuminatus, Penstemon alamosensis, Penstemon albertinus, Penstemon albomarginatus, Penstemon anguineus, Penstemon arenarius, Penstemon arenicola, Penstemon aridus, Penstemon arkansanus, Penstemon attenuatus, Penstemon atwoodii, Penstemon australis, Penstemon azureus, Penstemon baccharifolius, Penstemon barbatus, Penstemon barnebyi, Penstemon barrettiae, Penstemon bicolor, Penstemon bracteatus, Penstemon breviculus, Penstemon caesius, Penstemon caespitosus, Penstemon calcareus, Penstemon californicus, Penstemon calycosus, Penstemon canescens, Penstemon cardinalis, Penstemon cardwellii, Penstemon carnosus, Penstemon caryi, Penstemon centranthifolius, Penstemon cinicola, Penstemon clevelandii, Penstemon comarrhenus, Penstemon concinnus, Penstemon confertus, Penstemon confusus, Penstemon crandallii, Penstemon crideri, Penstemon cusickii, Penstemon cyananthus, Penstemon cyaneus, Penstemon cyanocaulis, Penstemon cyathophorus, Penstemon dasyphyllus, Penstemon davidsonii, Penstemon deamii, Penstemon deaveri, Penstemon degeneri, Penstemon deustus, Penstemon diphyllus, Penstemon discolor, Penstemon dissectus, Penstemon dolius, Penstemon eatonii, Penstemon elegantulus, Penstemon ellipticus, Penstemon eriantherus, Penstemon euglaucus, Penstemon filiformis, Penstemon flavescens, Penstemon floridus, Penstemon fremontii, Penstemon fruticiformis, Penstemon fruticosus, Penstemon gairdneri, Penstemon glandulosus, Penstemon glaucinus, Penstemon globosus, Penstemon goodrichii, Penstemon gracilentus, Penstemon grahamii, Penstemon grinnellii, Penstemon guadalupensis, Penstemon hallii, Penstemon harbourii, Penstemon harringtonii, Penstemon havardii, Penstemon heterodoxus, Penstemon heterophyllus, Penstemon hirsutus, Penstemon humilis, Penstemon immanifestus, Penstemon incertus, Penstemon janishiae, Penstemon jonesii, Penstemon kingii, Penstemon labrosus, Penstemon laetus, Penstemon laevigatus, Penstemon laevis, Penstemon lanceolatus, Penstemon laricifolius, Penstemon laxus, Penstemon leiophyllus, Penstemon lemhiensis, Penstemon lentus, Penstemon leonardii, Penstemon linarioides, Penstemon lyallii, Penstemon marcusii, Penstemon mensarum, Penstemon mirus, Penstemon miser, Penstemon moffatii, Penstemon monoensis, Penstemon montanus, Penstemon moriahensis, Penstemon mucronatus, Penstemon murrayanus, Penstemon nanus, Penstemon navajoa, Penstemon neomexicanus, Penstemon neotericus, Penstemon newberryi, Penstemon nudiflorus, Penstemon oliganthus, Penstemon osterhoutii, Penstemon ovatus, Penstemon pachyphyllus, Penstemon pahutensis, Penstemon palmeri, Penstemon papillatus, Penstemon parryi, Penstemon parvulus, Penstemon parvus, Penstemon patens, Penstemon payettensis, Penstemon paysoniorum, Penstemon peckii, Penstemon pennellianus, Penstemon perpulcher, Penstemon personatus, Penstemon petiolatus, Penstemon pinifolius, Penstemon platyphyllus, Penstemon pratensis, Penstemon pruinosus, Penstemon pseudoputus, Penstemon pseudospectabilis, Penstemon pudicus, Penstemon pumilus, Penstemon purpusii, Penstemon putus, Penstemon radicosus, Penstemon rattanii, Penstemon retrorsus, Penstemon richardsonii, Penstemon rubicundus, Penstemon rupicola, Penstemon rydbergii, Penstemon saxosorum, Penstemon scapoides, Penstemon scariosus, Penstemon secundiflorus, Penstemon seorsus, Penstemon sepalulus, Penstemon smallii, Penstemon spatulatus, Penstemon speciosus, Penstemon spectabilis, Penstemon stenophyllus, Penstemon stephensii, Penstemon strictus, Penstemon subglaber, Penstemon subserratus, Penstemon subulatus, Penstemon tenuiflorus, Penstemon tenuis, Penstemon teucrioides, Penstemon thompsoniae, Penstemon thurberi, Penstemon tidestromii, Penstemon tracyi, Penstemon triflorus, Penstemon triphyllus, Penstemon uintahensis, Penstemon utahensis, Penstemon venustus, Penstemon wardii, Penstemon washingtonensis, Penstemon watsonii, Penstemon whippleanus, Penstemon wilcoxii, Penstemon wrightii, Penstemon yampaensis, Penstemon penlandii, Penstemon virgatus, Penstemon parishii, Penstemon duchesnensis, Penstemon floribundus, Penstemon pinorum, Penstemon sudans, Penstemon distans, Penstemon ophianthus, Penstemon ammophilus, Penstemon longiflorus, Penstemon compactus, Penstemon strictiformis, Penstemon roezlii, Penstemon rostriflorus, Penstemon bradburyi, Penstemon brevibarbatus, Penstemon perfoliatus, Penstemon debilis, Penstemon absarokensis, Penstemon flowersii, Penstemon gibbensii, Penstemon hidalgensis, Penstemon laevigatus, Penstemon gentryi, Penstemon fasciculatus, Penstemon peirsonii, Penstemon eximius, Penstemon cerrosensis, Penstemon hartwegii, Penstemon isophyllus, Penstemon roseus, Penstemon punctatus, Penstemon tenuifolius, Penstemon wislizeni, Penstemon atropurpureus, Penstemon rotundifolius, Penstemon potosinus, Penstemon amphorellae, Penstemon bolanus, Penstemon cedrosensis, Penstemon filisepalis, Penstemon galloensis, Penstemon henricksonii, Penstemon jaliscensis, Penstemon leonensis, Penstemon luteus, Penstemon miniatus, Penstemon minutifolius, Penstemon mohinoranus, Penstemon occiduus, Penstemon plagapineus, Penstemon tepicensis, Penstemon multiflorus, Penstemon kralii, Penstemon bleaklyi, Penstemon albifluvis, Penstemon angelicus, Penstemon dugesii, Penstemon tiehmii, Penstemon rhizomatosus, Penstemon reidmoranii, Penstemon idahoensis, Penstemon bolanius, Penstemon hesperius, Penstemon salmonensis, Penstemon curtiflorus,