Latin Lookup
Species within the genus "Penstemon"
| Family | Genus | Species | Common Name | More Info |
| Scrophulariaceae | Penstemon | abietinus | firleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | absarokensis | Absaroka Range beardtongue | PF |
| Scrophulariaceae | Penstemon | acaulis | Penstemon yampaensis | PF |
| Scrophulariaceae | Penstemon | acaulis | stemless beardtongue | PF |
| Scrophulariaceae | Penstemon | acuminatus | sharpleaf penstemon | PF |
| Scrophulariaceae | Penstemon | acuminatus | sharpleaf penstemon | PF |
| Scrophulariaceae | Penstemon | acuminatus | sharpleaf penstemon | PF |
| Scrophulariaceae | Penstemon | aggregatus | Penstemon rydbergii var. aggregatus | |
| Scrophulariaceae | Penstemon | alamosensis | Los Alamos beardtongue | PF |
| Scrophulariaceae | Penstemon | albertinus | Alberta beardtongue | PF |
| Scrophulariaceae | Penstemon | albidus | white penstemon | PF |
| Scrophulariaceae | Penstemon | albifluvis | Penstemon scariosus var. albifluvis | |
| Scrophulariaceae | Penstemon | albomarginatus | whitemargin beardtongue | PF |
| Scrophulariaceae | Penstemon | alluviorum | lowland beardtongue | |
| Scrophulariaceae | Penstemon | alpinus | Penstemon glaber var. brandegeei | |
| Scrophulariaceae | Penstemon | alpinus | Penstemon glaber var. glaber | |
| Scrophulariaceae | Penstemon | alpinus | Penstemon glaber var. alpinus | |
| Scrophulariaceae | Penstemon | ambiguus | Penstemon ambiguus var. laevissimus | PF |
| Scrophulariaceae | Penstemon | ambiguus | gilia beardtongue | PF |
| Scrophulariaceae | Penstemon | ambiguus | pink plains beardtongue | PF |
| Scrophulariaceae | Penstemon | ambiguus | gilia beardtongue | PF |
| Scrophulariaceae | Penstemon | ammophilus | sandloving penstemon | |
| Scrophulariaceae | Penstemon | anguineus | Siskiyou beardtongue | |
| Scrophulariaceae | Penstemon | angustifolius | Penstemon angustifolius var. caudatus | PF |
| Scrophulariaceae | Penstemon | angustifolius | Penstemon angustifolius var. venosus | PF |
| Scrophulariaceae | Penstemon | angustifolius | broadbeard beardtongue | PF |
| Scrophulariaceae | Penstemon | angustifolius | broadbeard beardtongue | PF |
| Scrophulariaceae | Penstemon | angustifolius | broadbeard beardtongue | PF |
| Scrophulariaceae | Penstemon | angustifolius | broadbeard beardtongue | PF |
| Scrophulariaceae | Penstemon | angustifolius | broadbeard beardtongue | PF |
| Scrophulariaceae | Penstemon | angustifolius | broadbeard beardtongue | PF |
| Scrophulariaceae | Penstemon | antirrhinoides | Keckiella antirrhinoides ssp. microphylla | |
| Scrophulariaceae | Penstemon | antirrhinoides | Keckiella antirrhinoides ssp. antirrhinoides | |
| Scrophulariaceae | Penstemon | arenarius | Nevada sanddune beardtongue | PF |
| Scrophulariaceae | Penstemon | arenicola | sand penstemon | PF |
| Scrophulariaceae | Penstemon | aridus | stiffleaf penstemon | PF |
| Scrophulariaceae | Penstemon | arkansanus | Penstemon pallidus | PF |
| Scrophulariaceae | Penstemon | arkansanus | Arkansas beardtongue | PF |
| Scrophulariaceae | Penstemon | assurgens | Penstemon attenuatus var. militaris | |
| Scrophulariaceae | Penstemon | attenuatus | Penstemon attenuatus var. militaris | |
| Scrophulariaceae | Penstemon | attenuatus | Penstemon attenuatus var. palustris | |
| Scrophulariaceae | Penstemon | attenuatus | Penstemon attenuatus var. pseudoprocerus | |
| Scrophulariaceae | Penstemon | attenuatus | sulphur penstemon | |
| Scrophulariaceae | Penstemon | attenuatus | South Idaho penstemon | |
| Scrophulariaceae | Penstemon | attenuatus | sulphur beardtongue | |
| Scrophulariaceae | Penstemon | attenuatus | small penstemon | |
| Scrophulariaceae | Penstemon | attenuatus | sulphur penstemon | |
| Scrophulariaceae | Penstemon | atwoodii | Kaiparowits beardtongue | PF |
| Scrophulariaceae | Penstemon | auriberbis | Colorado beardtongue | PF |
| Scrophulariaceae | Penstemon | australis | Penstemon laxiflorus | PF |
| Scrophulariaceae | Penstemon | australis | Penstemon laxiflorus | PF |
| Scrophulariaceae | Penstemon | australis | Eustis Lake beardtongue | PF |
| Scrophulariaceae | Penstemon | azureus | azure penstemon | PF |
| Scrophulariaceae | Penstemon | azureus | azure penstemon | PF |
| Scrophulariaceae | Penstemon | azureus | Penstemon azureus ssp. angustissimus | PF |
| Scrophulariaceae | Penstemon | azureus | Penstemon azureus ssp. azureus | PF |
| Scrophulariaceae | Penstemon | azureus | azure penstemon | PF |
| Scrophulariaceae | Penstemon | baccharifolius | baccharisleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | barbatus | beardlip penstemon | PF |
| Scrophulariaceae | Penstemon | barbatus | Torrey's penstemon | PF |
| Scrophulariaceae | Penstemon | barbatus | beardlip penstemon | PF |
| Scrophulariaceae | Penstemon | barbatus | Penstemon barbatus ssp. barbatus | PF |
| Scrophulariaceae | Penstemon | barbatus | Penstemon barbatus ssp. torreyi | PF |
| Scrophulariaceae | Penstemon | barbatus | Penstemon barbatus ssp. trichander | PF |
| Scrophulariaceae | Penstemon | barbatus | beardlip penstemon | PF |
| Scrophulariaceae | Penstemon | barnebyi | White River Valley beardtongue | |
| Scrophulariaceae | Penstemon | barrettiae | Barrett's beardtongue | PF |
| Scrophulariaceae | Penstemon | bicolor | pinto beardtongue | PF |
| Scrophulariaceae | Penstemon | bicolor | pinto beardtongue | PF |
| Scrophulariaceae | Penstemon | bicolor | pinto beardtongue | PF |
| Scrophulariaceae | Penstemon | bracteatus | Red Canyon beardtongue | |
| Scrophulariaceae | Penstemon | bradburii | Penstemon grandiflorus | |
| Scrophulariaceae | Penstemon | brandegeei | Penstemon glaber var. brandegeei | |
| Scrophulariaceae | Penstemon | brevibarbatus | Penstemon jamesii | |
| Scrophulariaceae | Penstemon | breviculus | shortstem beardtongue | PF |
| Scrophulariaceae | Penstemon | breviflorus | Keckiella breviflora ssp. glabrisepala | |
| Scrophulariaceae | Penstemon | breviflorus | Keckiella breviflora ssp. breviflora | |
| Scrophulariaceae | Penstemon | brevisepalus | Penstemon pallidus | |
| Scrophulariaceae | Penstemon | bridgesii | Penstemon rostriflorus | |
| Scrophulariaceae | Penstemon | bridgesii | Penstemon rostriflorus | |
| Scrophulariaceae | Penstemon | brittoniorum | Penstemon canescens | |
| Scrophulariaceae | Penstemon | bryantiae | Bryant's beardtongue | |
| Scrophulariaceae | Penstemon | buckleyi | Buckley's beardtongue | PF |
| Scrophulariaceae | Penstemon | caesius | San Bernardino beardtongue | |
| Scrophulariaceae | Penstemon | caespitosus | Penstemon caespitosus var. desertipicti | PF |
| Scrophulariaceae | Penstemon | caespitosus | Penstemon caespitosus var. perbrevis | PF |
| Scrophulariaceae | Penstemon | caespitosus | mat penstemon | PF |
| Scrophulariaceae | Penstemon | caespitosus | mat penstemon | PF |
| Scrophulariaceae | Penstemon | caespitosus | mat penstemon | PF |
| Scrophulariaceae | Penstemon | caespitosus | Penstemon tusharensis | PF |
| Scrophulariaceae | Penstemon | caespitosus | mat penstemon | PF |
| Scrophulariaceae | Penstemon | calcareus | limestone beardtongue | |
| Scrophulariaceae | Penstemon | californicus | California penstemon | PF |
| Scrophulariaceae | Penstemon | calycosus | longsepal beardtongue | PF |
| Scrophulariaceae | Penstemon | campanulatus | bellflower beardtongue | PF |
| Scrophulariaceae | Penstemon | canescens | Penstemon canescens | PF |
| Scrophulariaceae | Penstemon | canescens | Penstemon canescens | PF |
| Scrophulariaceae | Penstemon | canescens | eastern gray beardtongue | PF |
| Scrophulariaceae | Penstemon | cardinalis | cardinal beardtongue | PF |
| Scrophulariaceae | Penstemon | cardinalis | cardinal beardtongue | PF |
| Scrophulariaceae | Penstemon | cardinalis | cardinal beardtongue | PF |
| Scrophulariaceae | Penstemon | cardwellii | Cardwell's beardtongue | PF |
| Scrophulariaceae | Penstemon | carnosus | fleshy beardtongue | PF |
| Scrophulariaceae | Penstemon | caryi | Cary's beardtongue | PF |
| Scrophulariaceae | Penstemon | caudatus | Penstemon angustifolius var. caudatus | |
| Scrophulariaceae | Penstemon | centranthifolius | scarlet bugler | PF |
| Scrophulariaceae | Penstemon | cinerascens | Penstemon roezlii | |
| Scrophulariaceae | Penstemon | cinereus | Penstemon humilis ssp. humilis | |
| Scrophulariaceae | Penstemon | cinereus | Penstemon humilis ssp. humilis | |
| Scrophulariaceae | Penstemon | cinicola | ash penstemon | |
| Scrophulariaceae | Penstemon | cleburnei | Penstemon eriantherus var. cleburnei | |
| Scrophulariaceae | Penstemon | clevelandii | Cleveland's beardtongue | PF |
| Scrophulariaceae | Penstemon | clevelandii | San Jacinto beardtongue | PF |
| Scrophulariaceae | Penstemon | clevelandii | Cleveland's beardtongue | PF |
| Scrophulariaceae | Penstemon | clevelandii | Penstemon clevelandii ssp. connatus | PF |
| Scrophulariaceae | Penstemon | clevelandii | Penstemon clevelandii ssp. mohavensis | PF |
| Scrophulariaceae | Penstemon | clevelandii | Cleveland's beardtongue | PF |
| Scrophulariaceae | Penstemon | clutei | Sunset Crater beardtongue | PF |
| Scrophulariaceae | Penstemon | cobaea | Penstemon cobaea | PF |
| Scrophulariaceae | Penstemon | cobaea | Penstemon cobaea | PF |
| Scrophulariaceae | Penstemon | cobaea | Penstemon cobaea | PF |
| Scrophulariaceae | Penstemon | cobaea | cobaea beardtongue | PF |
| Scrophulariaceae | Penstemon | coloradoensis | Penstemon linarioides ssp. coloradoensis | |
| Scrophulariaceae | Penstemon | comarrhenus | dusty beardtongue | PF |
| Scrophulariaceae | Penstemon | compactus | compact penstemon | |
| Scrophulariaceae | Penstemon | concinnus | Tunnel Springs beardtongue | |
| Scrophulariaceae | Penstemon | confertus | Penstemon procerus var. procerus | PF |
| Scrophulariaceae | Penstemon | confertus | Penstemon procerus var. procerus | PF |
| Scrophulariaceae | Penstemon | confertus | yellow penstemon | PF |
| Scrophulariaceae | Penstemon | confusus | Penstemon patens | PF |
| Scrophulariaceae | Penstemon | confusus | Owens Valley beardtongue | PF |
| Scrophulariaceae | Penstemon | congestus | Penstemon pachyphyllus var. congestus | |
| Scrophulariaceae | Penstemon | cordifolius | Keckiella cordifolia | |
| Scrophulariaceae | Penstemon | corymbosus | Keckiella corymbosa | |
| Scrophulariaceae | Penstemon | crandallii | Crandall's beardtongue | PF |
| Scrophulariaceae | Penstemon | crandallii | Crandall's beardtongue | PF |
| Scrophulariaceae | Penstemon | crandallii | Crandall's beardtongue | PF |
| Scrophulariaceae | Penstemon | crandallii | Crandall's beardtongue | PF |
| Scrophulariaceae | Penstemon | crandallii | Taos penstemon | PF |
| Scrophulariaceae | Penstemon | crandallii | Penstemon crandallii ssp. atratus | PF |
| Scrophulariaceae | Penstemon | crandallii | Penstemon crandallii ssp. taosensis | PF |
| Scrophulariaceae | Penstemon | crandallii | Crandall's beardtongue | PF |
| Scrophulariaceae | Penstemon | cusickii | Cusick's beardtongue | |
| Scrophulariaceae | Penstemon | cyananthus | Penstemon compactus | PF |
| Scrophulariaceae | Penstemon | cyananthus | Penstemon longiflorus | PF |
| Scrophulariaceae | Penstemon | cyananthus | Penstemon cyananthus var. subglaber | PF |
| Scrophulariaceae | Penstemon | cyananthus | Penstemon compactus | PF |
| Scrophulariaceae | Penstemon | cyananthus | Wasatch beardtongue | PF |
| Scrophulariaceae | Penstemon | cyananthus | Penstemon longiflorus | PF |
| Scrophulariaceae | Penstemon | cyananthus | Wasatch beardtongue | PF |
| Scrophulariaceae | Penstemon | cyananthus | Wasatch beardtongue | PF |
| Scrophulariaceae | Penstemon | cyaneus | blue penstemon | PF |
| Scrophulariaceae | Penstemon | cyanocaulis | bluestem beardtongue | PF |
| Scrophulariaceae | Penstemon | cyathophorus | sagebrush beardtongue | |
| Scrophulariaceae | Penstemon | dasyphyllus | Cochise beardtongue | PF |
| Scrophulariaceae | Penstemon | davidsonii | Penstemon davidsonii var. menziesii | |
| Scrophulariaceae | Penstemon | davidsonii | Davidson's penstemon | |
| Scrophulariaceae | Penstemon | davidsonii | Penstemon ellipticus | |
| Scrophulariaceae | Penstemon | davidsonii | Menzies' penstemon | |
| Scrophulariaceae | Penstemon | davidsonii | timberline beardtongue | |
| Scrophulariaceae | Penstemon | davidsonii | Davidson's penstemon | |
| Scrophulariaceae | Penstemon | deamii | Deam's beardtongue | |
| Scrophulariaceae | Penstemon | deaveri | Mt. Graham beardtongue | |
| Scrophulariaceae | Penstemon | debilis | Parachute beardtongue | PF |
| Scrophulariaceae | Penstemon | decurvus | Penstemon humilis ssp. humilis | |
| Scrophulariaceae | Penstemon | degeneri | Degener's beardtongue | |
| Scrophulariaceae | Penstemon | deustus | Penstemon deustus var. pedicellatus | PF |
| Scrophulariaceae | Penstemon | deustus | Penstemon sudans | PF |
| Scrophulariaceae | Penstemon | deustus | Penstemon deustus var. variabilis | PF |
| Scrophulariaceae | Penstemon | deustus | scabland penstemon | PF |
| Scrophulariaceae | Penstemon | deustus | Penstemon deustus var. pedicellatus | PF |
| Scrophulariaceae | Penstemon | deustus | scabland penstemon | PF |
| Scrophulariaceae | Penstemon | deustus | scabland penstemon | PF |
| Scrophulariaceae | Penstemon | deustus | scabland penstemon | PF |
| Scrophulariaceae | Penstemon | deustus | scabland penstemon | PF |
| Scrophulariaceae | Penstemon | digitalis | talus slope penstemon | PF |
| Scrophulariaceae | Penstemon | diphyllus | twoleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | discolor | Cataiina beardtongue | |
| Scrophulariaceae | Penstemon | dissectus | dissected beardtongue | PF |
| Scrophulariaceae | Penstemon | distans | Mt. Tumbull beardtongue | |
| Scrophulariaceae | Penstemon | dolius | Jones' beardtongue | |
| Scrophulariaceae | Penstemon | dolius | Duchesne penstemon | |
| Scrophulariaceae | Penstemon | dolius | Jones' beardtongue | |
| Scrophulariaceae | Penstemon | duchesnensis | Penstemon dolius var. duchesnensis | |
| Scrophulariaceae | Penstemon | eatonii | Eaton's penstemon | PF |
| Scrophulariaceae | Penstemon | eatonii | Eaton's penstemon | PF |
| Scrophulariaceae | Penstemon | eatonii | Eaton's penstemon | PF |
| Scrophulariaceae | Penstemon | eatonii | Penstemon eatonii ssp. undosus | PF |
| Scrophulariaceae | Penstemon | eatonii | Eaton's penstemon | PF |
| Scrophulariaceae | Penstemon | elegantulus | rockvine penstemon | |
| Scrophulariaceae | Penstemon | ellipticus | rocky ledge penstemon | PF |
| Scrophulariaceae | Penstemon | eriantherus | fuzzytongue penstemon | PF |
| Scrophulariaceae | Penstemon | eriantherus | Cleburn's penstemon | PF |
| Scrophulariaceae | Penstemon | eriantherus | fuzzytongue penstemon | PF |
| Scrophulariaceae | Penstemon | eriantherus | longsac penstemon | PF |
| Scrophulariaceae | Penstemon | eriantherus | Whited's penstemon | PF |
| Scrophulariaceae | Penstemon | eriantherus | fuzzytongue penstemon | PF |
| Scrophulariaceae | Penstemon | euglaucus | glaucous beardtongue | PF |
| Scrophulariaceae | Penstemon | fendleri | Fendler's penstemon | PF |
| Scrophulariaceae | Penstemon | filiformis | threadleaf beardtongue | |
| Scrophulariaceae | Penstemon | flavescens | high mountain penstemon | |
| Scrophulariaceae | Penstemon | floribundus | Cordillia's beardtongue | |
| Scrophulariaceae | Penstemon | floridus | Penstemon floridus var. austinii | PF |
| Scrophulariaceae | Penstemon | floridus | Austin's beardtongue | PF |
| Scrophulariaceae | Penstemon | floridus | Panamint beardtongue | PF |
| Scrophulariaceae | Penstemon | floridus | Panamint beardtongue | PF |
| Scrophulariaceae | Penstemon | flowersii | Flowers' beardtongue | |
| Scrophulariaceae | Penstemon | francisci-pennellii | Penstemon leiophyllus var. francisci-pennellii | |
| Scrophulariaceae | Penstemon | franklinii | Franklin's penstemon | |
| Scrophulariaceae | Penstemon | fremontii | Fremont's beardtongue | |
| Scrophulariaceae | Penstemon | fremontii | Fremont's beardtongue | |
| Scrophulariaceae | Penstemon | fremontii | Fremont's beardtongue | |
| Scrophulariaceae | Penstemon | fruticiformis | Death Valley beardtongue | |
| Scrophulariaceae | Penstemon | fruticiformis | Death Valley beardtongue | |
| Scrophulariaceae | Penstemon | fruticiformis | Penstemon fruticiformis ssp. amargosae | |
| Scrophulariaceae | Penstemon | fruticiformis | Death Valley beardtongue | |
| Scrophulariaceae | Penstemon | fruticosus | Penstemon fruticosus var. scouleri | PF |
| Scrophulariaceae | Penstemon | fruticosus | Penstemon fruticosus var. serratus | PF |
| Scrophulariaceae | Penstemon | fruticosus | bush penstemon | PF |
| Scrophulariaceae | Penstemon | fruticosus | littleleaf bush penstemon | PF |
| Scrophulariaceae | Penstemon | fruticosus | sawleaf bush penstemon | PF |
| Scrophulariaceae | Penstemon | fruticosus | bush penstemon | PF |
| Scrophulariaceae | Penstemon | gairdneri | Penstemon gairdneri var. gairdneri | PF |
| Scrophulariaceae | Penstemon | gairdneri | Penstemon gairdneri var. oreganus | PF |
| Scrophulariaceae | Penstemon | gairdneri | Gairdner's beardtongue | PF |
| Scrophulariaceae | Penstemon | gairdneri | Penstemon gairdneri var. gairdneri | PF |
| Scrophulariaceae | Penstemon | gairdneri | Gairdner's beardtongue | PF |
| Scrophulariaceae | Penstemon | gairdneri | Gairdner's beardtongue | PF |
| Scrophulariaceae | Penstemon | garrettii | Penstemon scariosus var. garrettii | |
| Scrophulariaceae | Penstemon | gibbensii | Gibbens' beardtongue | |
| Scrophulariaceae | Penstemon | glaber | alpine sawsepal penstemon | PF |
| Scrophulariaceae | Penstemon | glaber | Brandegee's penstemon | PF |
| Scrophulariaceae | Penstemon | glaber | sawsepal penstemon | PF |
| Scrophulariaceae | Penstemon | glaber | sawsepal penstemon | PF |
| Scrophulariaceae | Penstemon | glandulosus | Penstemon glandulosus var. chelanensis | |
| Scrophulariaceae | Penstemon | glandulosus | stickystem penstemon | |
| Scrophulariaceae | Penstemon | glandulosus | stickystem penstemon | |
| Scrophulariaceae | Penstemon | glandulosus | stickystem penstemon | |
| Scrophulariaceae | Penstemon | glaucinus | blueleaf beardtongue | |
| Scrophulariaceae | Penstemon | globosus | globe penstemon | |
| Scrophulariaceae | Penstemon | goodrichii | Lapoint beardtongue | |
| Scrophulariaceae | Penstemon | gormanii | Gorman's beardtongue | |
| Scrophulariaceae | Penstemon | gracilentus | slender penstemon | |
| Scrophulariaceae | Penstemon | gracilis | Penstemon gracilis var. wisconsinensis | PF |
| Scrophulariaceae | Penstemon | gracilis | lilac penstemon | PF |
| Scrophulariaceae | Penstemon | gracilis | Wisconsin penstemon | PF |
| Scrophulariaceae | Penstemon | gracilis | lilac penstemon | PF |
| Scrophulariaceae | Penstemon | grahamii | Uinta Basin beardtongue | PF |
| Scrophulariaceae | Penstemon | grandiflorus | large beardtongue | PF |
| Scrophulariaceae | Penstemon | griffinii | Griffin's beardtongue | PF |
| Scrophulariaceae | Penstemon | grinnellii | Grinnell's beardtongue | PF |
| Scrophulariaceae | Penstemon | grinnellii | Grinnell's beardtongue | PF |
| Scrophulariaceae | Penstemon | grinnellii | Penstemon grinnellii ssp. scrophularioides | PF |
| Scrophulariaceae | Penstemon | grinnellii | Grinnell's beardtongue | PF |
| Scrophulariaceae | Penstemon | guadalupensis | Penstemon guadalupensis | PF |
| Scrophulariaceae | Penstemon | guadalupensis | Guadalupe beardtongue | PF |
| Scrophulariaceae | Penstemon | hallii | Hall's beardtongue | PF |
| Scrophulariaceae | Penstemon | harbourii | Harbour's beardtongue | PF |
| Scrophulariaceae | Penstemon | harringtonii | Harrington's beardtongue | |
| Scrophulariaceae | Penstemon | hartwegii | Hartweg's beardtongue | PF |
| Scrophulariaceae | Penstemon | havardii | Big Bend beardtongue | PF |
| Scrophulariaceae | Penstemon | haydenii | blowout beardtongue | |
| Scrophulariaceae | Penstemon | helleri | Penstemon triflorus ssp. integrifolius | |
| Scrophulariaceae | Penstemon | hesperius | Penstemon rydbergii var. rydbergii | |
| Scrophulariaceae | Penstemon | heterodoxus | Penstemon heterodoxus var. cephalophorus | |
| Scrophulariaceae | Penstemon | heterodoxus | Sierra beardtongue | |
| Scrophulariaceae | Penstemon | heterodoxus | Sierra beardtongue | |
| Scrophulariaceae | Penstemon | heterodoxus | Shasta beardtongue | |
| Scrophulariaceae | Penstemon | heterodoxus | Sierra beardtongue | |
| Scrophulariaceae | Penstemon | heterophyllus | foothill beardtongue | PF |
| Scrophulariaceae | Penstemon | heterophyllus | bunchleaf penstemon | PF |
| Scrophulariaceae | Penstemon | heterophyllus | Purdy's penstemon | PF |
| Scrophulariaceae | Penstemon | heterophyllus | Penstemon heterophyllus ssp. australis | PF |
| Scrophulariaceae | Penstemon | heterophyllus | Penstemon heterophyllus ssp. purdyi | PF |
| Scrophulariaceae | Penstemon | heterophyllus | bunchleaf penstemon | PF |
| Scrophulariaceae | Penstemon | hirsutus | Penstemon hirsutus | PF |
| Scrophulariaceae | Penstemon | hirsutus | Penstemon hirsutus | PF |
| Scrophulariaceae | Penstemon | hirsutus | hairy beardtongue | PF |
| Scrophulariaceae | Penstemon | holmgrenii | Penstemon cyananthus var. subglaber | |
| Scrophulariaceae | Penstemon | humilis | low beardtongue | PF |
| Scrophulariaceae | Penstemon | humilis | low beardtongue | PF |
| Scrophulariaceae | Penstemon | humilis | low beardtongue | PF |
| Scrophulariaceae | Penstemon | humilis | Penstemon humilis ssp. brevifolius | PF |
| Scrophulariaceae | Penstemon | humilis | Penstemon humilis ssp. humilis | PF |
| Scrophulariaceae | Penstemon | humilis | Penstemon humilis ssp. obtusifolius | PF |
| Scrophulariaceae | Penstemon | humilis | low beardtongue | PF |
| Scrophulariaceae | Penstemon | idahoensis | Idaho beardtongue | PF |
| Scrophulariaceae | Penstemon | immanifestus | Steptoe Valley beardtongue | |
| Scrophulariaceae | Penstemon | incertus | Mojave beardtongue | PF |
| Scrophulariaceae | Penstemon | inflatus | inflated beardtongue | |
| Scrophulariaceae | Penstemon | jamesii | Penstemon breviculus | |
| Scrophulariaceae | Penstemon | jamesii | Penstemon ophianthus | |
| Scrophulariaceae | Penstemon | jamesii | Penstemon jamesii | |
| Scrophulariaceae | Penstemon | jamesii | James' beardtongue | |
| Scrophulariaceae | Penstemon | janishiae | Antelope Valley beardtongue | PF |
| Scrophulariaceae | Penstemon | keckii | Penstemon leiophyllus var. keckii | |
| Scrophulariaceae | Penstemon | kingii | King's beardtongue | PF |
| Scrophulariaceae | Penstemon | labrosus | San Gabriel beardtongue | PF |
| Scrophulariaceae | Penstemon | laetus | mountain blue penstemon | |
| Scrophulariaceae | Penstemon | laetus | mountain blue penstemon | |
| Scrophulariaceae | Penstemon | laetus | Penstemon roezlii | |
| Scrophulariaceae | Penstemon | laetus | mountain blue penstemon | |
| Scrophulariaceae | Penstemon | laetus | Penstemon laetus ssp. leptosepalus | |
| Scrophulariaceae | Penstemon | laetus | Penstemon roezlii | |
| Scrophulariaceae | Penstemon | laetus | Penstemon laetus ssp. sagittatus | |
| Scrophulariaceae | Penstemon | laetus | mountain blue penstemon | |
| Scrophulariaceae | Penstemon | laevigatus | Penstemon alluviorum | PF |
| Scrophulariaceae | Penstemon | laevigatus | Penstemon calycosus | PF |
| Scrophulariaceae | Penstemon | laevigatus | Penstemon digitalis | PF |
| Scrophulariaceae | Penstemon | laevigatus | Penstemon digitalis | PF |
| Scrophulariaceae | Penstemon | laevigatus | Penstemon deamii | PF |
| Scrophulariaceae | Penstemon | laevigatus | eastern smooth beardtongue | PF |
| Scrophulariaceae | Penstemon | laevis | southwestern beardtongue | |
| Scrophulariaceae | Penstemon | lanceolatus | Penstemon ramosus | |
| Scrophulariaceae | Penstemon | laricifolius | larchleaf beardtongue | |
| Scrophulariaceae | Penstemon | laricifolius | larchleaf beardtongue | |
| Scrophulariaceae | Penstemon | laricifolius | Penstemon laricifolius ssp. exilifolius | |
| Scrophulariaceae | Penstemon | laricifolius | larchleaf beardtongue | |
| Scrophulariaceae | Penstemon | laxiflorus | nodding beardtongue | PF |
| Scrophulariaceae | Penstemon | laxus | tufted penstemon | |
| Scrophulariaceae | Penstemon | leiophyllus | smoothleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | leiophyllus | Keck's beardtongue | PF |
| Scrophulariaceae | Penstemon | leiophyllus | smoothleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | leiophyllus | smoothleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | lemhiensis | Lemhi penstemon | |
| Scrophulariaceae | Penstemon | lemmonii | Keckiella lemmonii | |
| Scrophulariaceae | Penstemon | lentus | Penstemon lentus var. albiflorus | PF |
| Scrophulariaceae | Penstemon | lentus | handsome beardtongue | PF |
| Scrophulariaceae | Penstemon | lentus | handsome beardtongue | PF |
| Scrophulariaceae | Penstemon | lentus | handsome beardtongue | PF |
| Scrophulariaceae | Penstemon | leonardii | Higgins' beardtongue | PF |
| Scrophulariaceae | Penstemon | leonardii | Leonard's beardtongue | PF |
| Scrophulariaceae | Penstemon | leonardii | Leonard's beardtongue | PF |
| Scrophulariaceae | Penstemon | leonardii | Leonard's beardtongue | PF |
| Scrophulariaceae | Penstemon | leptanthus | Sevier Plateau beardtongue | |
| Scrophulariaceae | Penstemon | linarioides | toadflax penstemon | |
| Scrophulariaceae | Penstemon | linarioides | toadflax beardtongue | |
| Scrophulariaceae | Penstemon | linarioides | toadflax beardtongue | |
| Scrophulariaceae | Penstemon | linarioides | Maguire's penstemon | |
| Scrophulariaceae | Penstemon | linarioides | Siler's penstemon | |
| Scrophulariaceae | Penstemon | linarioides | Penstemon crandallii ssp. taosensis | |
| Scrophulariaceae | Penstemon | linarioides | Penstemon linarioides ssp. linarioides | |
| Scrophulariaceae | Penstemon | linarioides | Penstemon linarioides ssp. sileri | |
| Scrophulariaceae | Penstemon | linarioides | Penstemon linarioides ssp. sileri | |
| Scrophulariaceae | Penstemon | linarioides | toadflax penstemon | |
| Scrophulariaceae | Penstemon | longiflorus | longflower penstemon | |
| Scrophulariaceae | Penstemon | lyallii | Lyall's beardtongue | PF |
| Scrophulariaceae | Penstemon | macranthus | Penstemon palmeri var. macranthus | |
| Scrophulariaceae | Penstemon | maguirei | Penstemon arenarius | |
| Scrophulariaceae | Penstemon | marcusii | Marcus' beardtongue | |
| Scrophulariaceae | Penstemon | mensarum | tiger beardtongue | PF |
| Scrophulariaceae | Penstemon | menziesii | Penstemon davidsonii var. davidsonii | |
| Scrophulariaceae | Penstemon | menziesii | Penstemon davidsonii var. davidsonii | |
| Scrophulariaceae | Penstemon | menziesii | Penstemon davidsonii var. menziesii | |
| Scrophulariaceae | Penstemon | microphyllus | Keckiella antirrhinoides ssp. microphylla | |
| Scrophulariaceae | Penstemon | minidokanus | Penstemon perpulcher | |
| Scrophulariaceae | Penstemon | miser | Malheur penstemon | |
| Scrophulariaceae | Penstemon | modestus | Penstemon procerus var. modestus | |
| Scrophulariaceae | Penstemon | moffatii | Penstemon marcusii | PF |
| Scrophulariaceae | Penstemon | moffatii | Moffatt's beardtongue | PF |
| Scrophulariaceae | Penstemon | moffatii | Moffatt's beardtongue | PF |
| Scrophulariaceae | Penstemon | moffatii | Moffatt's beardtongue | PF |
| Scrophulariaceae | Penstemon | monoensis | Mono penstemon | |
| Scrophulariaceae | Penstemon | montanus | Penstemon montanus var. idahoensis | PF |
| Scrophulariaceae | Penstemon | montanus | Central Idaho penstemon | PF |
| Scrophulariaceae | Penstemon | montanus | cordroot beardtongue | PF |
| Scrophulariaceae | Penstemon | montanus | cordroot beardtongue | PF |
| Scrophulariaceae | Penstemon | moriahensis | Mt. Moriah beardtongue | |
| Scrophulariaceae | Penstemon | mucronatus | Penstemon pachyphyllus var. mucronatus | |
| Scrophulariaceae | Penstemon | multicaulis | Penstemon arkansanus | |
| Scrophulariaceae | Penstemon | multiflorus | manyflower beardtongue | PF |
| Scrophulariaceae | Penstemon | murrayanus | scarlet beardtongue | PF |
| Scrophulariaceae | Penstemon | nanus | dwarf beardtongue | PF |
| Scrophulariaceae | Penstemon | navajoa | Navajo Mountain beardtongue | PF |
| Scrophulariaceae | Penstemon | nemorosus | Nothochelone nemorosa | |
| Scrophulariaceae | Penstemon | neomexicanus | New Mexico beardtongue | PF |
| Scrophulariaceae | Penstemon | neotericus | Plumas County beardtongue | PF |
| Scrophulariaceae | Penstemon | newberryi | Berry's penstemon | PF |
| Scrophulariaceae | Penstemon | newberryi | mountain pride | PF |
| Scrophulariaceae | Penstemon | newberryi | Sonoma penstemon | PF |
| Scrophulariaceae | Penstemon | newberryi | Penstemon newberryi ssp. berryi | PF |
| Scrophulariaceae | Penstemon | newberryi | Penstemon newberryi ssp. sonomensis | PF |
| Scrophulariaceae | Penstemon | newberryi | mountain pride | PF |
| Scrophulariaceae | Penstemon | nitidus | Penstemon nitidus var. polyphyllus | PF |
| Scrophulariaceae | Penstemon | nitidus | waxleaf penstemon | PF |
| Scrophulariaceae | Penstemon | nitidus | waxleaf penstemon | PF |
| Scrophulariaceae | Penstemon | nitidus | waxleaf penstemon | PF |
| Scrophulariaceae | Penstemon | nudiflorus | Flagstaff beardtongue | |
| Scrophulariaceae | Penstemon | nyeensis | Penstemon kingii | |
| Scrophulariaceae | Penstemon | oklahomensis | Oklahoma beardtongue | |
| Scrophulariaceae | Penstemon | oliganthus | Apache beardtongue | PF |
| Scrophulariaceae | Penstemon | ophianthus | coiled anther penstemon | |
| Scrophulariaceae | Penstemon | oreocharis | Penstemon rydbergii var. oreocharis | |
| Scrophulariaceae | Penstemon | osterhoutii | Osterhout's beardtongue | |
| Scrophulariaceae | Penstemon | ovatus | Penstemon wilcoxii | PF |
| Scrophulariaceae | Penstemon | ovatus | eggleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | pachyphyllus | Penstemon pachyphyllus var. congestus | |
| Scrophulariaceae | Penstemon | pachyphyllus | thickleaf beardtongue | |
| Scrophulariaceae | Penstemon | pachyphyllus | mucronate penstemon | |
| Scrophulariaceae | Penstemon | pachyphyllus | thickleaf beardtongue | |
| Scrophulariaceae | Penstemon | pachyphyllus | thickleaf beardtongue | |
| Scrophulariaceae | Penstemon | pahutensis | Paiute beardtongue | |
| Scrophulariaceae | Penstemon | pallidus | Penstemon arkansanus | PF |
| Scrophulariaceae | Penstemon | pallidus | pale beardtongue | PF |
| Scrophulariaceae | Penstemon | palmeri | Penstemon palmeri var. eglandulosus | PF |
| Scrophulariaceae | Penstemon | palmeri | Penstemon palmeri var. palmeri | PF |
| Scrophulariaceae | Penstemon | palmeri | scented beardtongue | PF |
| Scrophulariaceae | Penstemon | palmeri | scented beardtongue | PF |
| Scrophulariaceae | Penstemon | palmeri | Palmer's penstemon | PF |
| Scrophulariaceae | Penstemon | palmeri | Palmer's penstemon | PF |
| Scrophulariaceae | Penstemon | papillatus | Inyo beardtongue | |
| Scrophulariaceae | Penstemon | parryi | Parry's beardtongue | PF |
| Scrophulariaceae | Penstemon | parviflorus | Montezuma County beardtongue | |
| Scrophulariaceae | Penstemon | parvulus | Penstemon azureus ssp. azureus | |
| Scrophulariaceae | Penstemon | parvus | Aquarius Plateau beardtongue | PF |
| Scrophulariaceae | Penstemon | patens | Lone Pine beardtongue | |
| Scrophulariaceae | Penstemon | patricus | Penstemon leonardii var. patricus | |
| Scrophulariaceae | Penstemon | pauciflorus | Penstemon ramosus | |
| Scrophulariaceae | Penstemon | payettensis | Payette beardtongue | PF |
| Scrophulariaceae | Penstemon | paysoniorum | Payson's beardtongue | PF |
| Scrophulariaceae | Penstemon | peckii | Peck's beardtongue | PF |
| Scrophulariaceae | Penstemon | penlandii | Penland's beardtongue | |
| Scrophulariaceae | Penstemon | pennellianus | Blue Mountain beardtongue | |
| Scrophulariaceae | Penstemon | penstemon | Penstemon laevigatus | |
| Scrophulariaceae | Penstemon | perpulcher | Minidoka beardtongue | |
| Scrophulariaceae | Penstemon | personatus | closethroat beardtongue | |
| Scrophulariaceae | Penstemon | petiolatus | petiolate beardtongue | |
| Scrophulariaceae | Penstemon | pinifolius | pineneedle beardtongue | PF |
| Scrophulariaceae | Penstemon | pinorum | Pine Valley penstemon | PF |
| Scrophulariaceae | Penstemon | platyphyllus | broadleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | pratensis | western whiteflower beardtongue | |
| Scrophulariaceae | Penstemon | procerus | Penstemon procerus var. aberrans | PF |
| Scrophulariaceae | Penstemon | procerus | Penstemon procerus var. brachyanthus | PF |
| Scrophulariaceae | Penstemon | procerus | Penstemon procerus var. formosus | PF |
| Scrophulariaceae | Penstemon | procerus | Penstemon procerus var. modestus | PF |
| Scrophulariaceae | Penstemon | procerus | pincushion beardtongue | PF |
| Scrophulariaceae | Penstemon | procerus | pincushion beardtongue | PF |
| Scrophulariaceae | Penstemon | procerus | pincushion beardtongue | PF |
| Scrophulariaceae | Penstemon | procerus | pincushion beardtongue | PF |
| Scrophulariaceae | Penstemon | procerus | pincushion beardtongue | PF |
| Scrophulariaceae | Penstemon | procerus | Tolmie's penstemon | PF |
| Scrophulariaceae | Penstemon | procerus | littleflower penstemon | PF |
| Scrophulariaceae | Penstemon | pruinosus | Chilean beardtongue | PF |
| Scrophulariaceae | Penstemon | pseudoparvus | Mt. Washington beardtongue | |
| Scrophulariaceae | Penstemon | pseudoputus | Kaibab Plateau beardtongue | |
| Scrophulariaceae | Penstemon | pseudospectabilis | desert beardtongue | PF |
| Scrophulariaceae | Penstemon | pseudospectabilis | desert beardtongue | PF |
| Scrophulariaceae | Penstemon | pseudospectabilis | Penstemon pseudospectabilis ssp. pseudospectabilis | PF |
| Scrophulariaceae | Penstemon | pseudospectabilis | desert penstemon | PF |
| Scrophulariaceae | Penstemon | puberulentus | Penstemon gairdneri var. oreganus | |
| Scrophulariaceae | Penstemon | pudicus | Kawich Range beardtongue | |
| Scrophulariaceae | Penstemon | pulchellus | Penstemon campanulatus | |
| Scrophulariaceae | Penstemon | pumilus | Salmon River beardtongue | |
| Scrophulariaceae | Penstemon | purpusii | Snow Mountain beardtongue | |
| Scrophulariaceae | Penstemon | putus | Black River beardtongue | |
| Scrophulariaceae | Penstemon | radicosus | matroot penstemon | |
| Scrophulariaceae | Penstemon | ramosus | lanceleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | rattanii | Santa Cruz Mountains beardtongue | PF |
| Scrophulariaceae | Penstemon | rattanii | Rattan's beardtongue | PF |
| Scrophulariaceae | Penstemon | rattanii | Penstemon rattanii ssp. kleei | PF |
| Scrophulariaceae | Penstemon | rattanii | Penstemon anguineus | PF |
| Scrophulariaceae | Penstemon | rattanii | Rattan's beardtongue | PF |
| Scrophulariaceae | Penstemon | retrorsus | Adobe Hills beardtongue | |
| Scrophulariaceae | Penstemon | rhizomatosus | ||
| Scrophulariaceae | Penstemon | richardsonii | Penstemon richardsonii var. curtiflorus | PF |
| Scrophulariaceae | Penstemon | richardsonii | Penstemon richardsonii var. dentatus | PF |
| Scrophulariaceae | Penstemon | richardsonii | cutleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | richardsonii | cutleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | richardsonii | Richardson's penstemon | PF |
| Scrophulariaceae | Penstemon | richardsonii | cutleaf beardtongue | PF |
| Scrophulariaceae | Penstemon | roezlii | Roezl's penstemon | PF |
| Scrophulariaceae | Penstemon | rostriflorus | Bridge penstemon | PF |
| Scrophulariaceae | Penstemon | rothrockii | Keckiella rothrockii ssp. jacintensis | |
| Scrophulariaceae | Penstemon | rothrockii | Keckiella rothrockii ssp. rothrockii | |
| Scrophulariaceae | Penstemon | rubicundus | Wassuk Range beardtongue | |
| Scrophulariaceae | Penstemon | rupicola | cliff beardtongue | PF |
| Scrophulariaceae | Penstemon | rydbergii | Penstemon rydbergii var. aggregatus | PF |
| Scrophulariaceae | Penstemon | rydbergii | meadow beardtongue | PF |
| Scrophulariaceae | Penstemon | rydbergii | herbaceous penstemon | PF |
| Scrophulariaceae | Penstemon | rydbergii | swollen penstemon | PF |
| Scrophulariaceae | Penstemon | rydbergii | Penstemon rydbergii var. rydbergii | PF |
| Scrophulariaceae | Penstemon | rydbergii | Rydberg's penstemon | PF |
| Scrophulariaceae | Penstemon | saxosorum | upland beardtongue | |
| Scrophulariaceae | Penstemon | scapoides | pinyon beardtongue | |
| Scrophulariaceae | Penstemon | scariosus | White River beardtongue | |
| Scrophulariaceae | Penstemon | scariosus | Neese's Blue Mountain beardtongue | |
| Scrophulariaceae | Penstemon | scariosus | Garrett's beardtongue | |
| Scrophulariaceae | Penstemon | scariosus | White River beardtongue | |
| Scrophulariaceae | Penstemon | scariosus | White River beardtongue | |
| Scrophulariaceae | Penstemon | Schmidel | beardtongue | |
| Scrophulariaceae | Penstemon | secundiflorus | sidebells penstemon | PF |
| Scrophulariaceae | Penstemon | seorsus | shortlobe penstemon | |
| Scrophulariaceae | Penstemon | sepalulus | littlecup beardtongue | PF |
| Scrophulariaceae | Penstemon | serrulatus | serrulate penstemon | PF |
| Scrophulariaceae | Penstemon | shastensis | Penstemon heterodoxus var. shastensis | |
| Scrophulariaceae | Penstemon | smallii | Small's beardtongue | PF |
| Scrophulariaceae | Penstemon | spatulatus | Wallowa beardtongue | PF |
| Scrophulariaceae | Penstemon | speciosus | Penstemon speciosus | PF |
| Scrophulariaceae | Penstemon | speciosus | Penstemon lemhiensis | PF |
| Scrophulariaceae | Penstemon | speciosus | royal penstemon | PF |
| Scrophulariaceae | Penstemon | spectabilis | showy penstemon | PF |
| Scrophulariaceae | Penstemon | spectabilis | showy penstemon | PF |
| Scrophulariaceae | Penstemon | spectabilis | Penstemon spectabilis ssp. subviscosus | PF |
| Scrophulariaceae | Penstemon | spectabilis | showy penstemon | PF |
| Scrophulariaceae | Penstemon | stenophyllus | Sonoran beardtongue | |
| Scrophulariaceae | Penstemon | stephensii | Stephens' penstemon | |
| Scrophulariaceae | Penstemon | strictiformis | Mancos penstemon | |
| Scrophulariaceae | Penstemon | strictus | Penstemon strictus | PF |
| Scrophulariaceae | Penstemon | strictus | Penstemon strictiformis | PF |
| Scrophulariaceae | Penstemon | strictus | Rocky Mountain penstemon | PF |
| Scrophulariaceae | Penstemon | subglaber | smooth penstemon | |
| Scrophulariaceae | Penstemon | subserratus | finetooth beardtongue | |
| Scrophulariaceae | Penstemon | subulatus | hackberry beardtongue | PF |
| Scrophulariaceae | Penstemon | sudans | Susanville beardtongue | |
| Scrophulariaceae | Penstemon | suffrutescens | Penstemon crandallii ssp. crandallii | |
| Scrophulariaceae | Penstemon | superbus | superb beardtongue | PF |
| Scrophulariaceae | Penstemon | tenuiflorus | eastern whiteflower beardtongue | PF |
| Scrophulariaceae | Penstemon | tenuis | sharpsepal beardtongue | PF |
| Scrophulariaceae | Penstemon | ternatus | Keckiella ternata ssp. septentrionalis | |
| Scrophulariaceae | Penstemon | ternatus | Keckiella ternata ssp. ternata | |
| Scrophulariaceae | Penstemon | teucrioides | germander beardtongue | |
| Scrophulariaceae | Penstemon | thompsoniae | Jaeger's beardtongue | PF |
| Scrophulariaceae | Penstemon | thompsoniae | Thompson's beardtongue | PF |
| Scrophulariaceae | Penstemon | thompsoniae | Penstemon thompsoniae ssp. thompsoniae | PF |
| Scrophulariaceae | Penstemon | thompsoniae | Thompson's beardtongue | PF |
| Scrophulariaceae | Penstemon | thurberi | Penstemon thurberi | PF |
| Scrophulariaceae | Penstemon | thurberi | Thurber's penstemon | PF |
| Scrophulariaceae | Penstemon | tidestromii | Tidestrom's beardtongue | PF |
| Scrophulariaceae | Penstemon | tiehmii | Tiehm's beardtongue | |
| Scrophulariaceae | Penstemon | tolmiei | Penstemon procerus var. brachyanthus | |
| Scrophulariaceae | Penstemon | tolmiei | Penstemon procerus var. formosus | |
| Scrophulariaceae | Penstemon | tolmiei | Penstemon procerus var. tolmiei | |
| Scrophulariaceae | Penstemon | torreyi | Penstemon barbatus ssp. torreyi | |
| Scrophulariaceae | Penstemon | tracyi | Trinity penstemon | |
| Scrophulariaceae | Penstemon | triflorus | Heller's beardtongue | PF |
| Scrophulariaceae | Penstemon | triflorus | Heller's beardtongue | PF |
| Scrophulariaceae | Penstemon | triflorus | Penstemon triflorus ssp. integrifolius | PF |
| Scrophulariaceae | Penstemon | triflorus | Heller's beardtongue | PF |
| Scrophulariaceae | Penstemon | triphyllus | Penstemon diphyllus | |
| Scrophulariaceae | Penstemon | triphyllus | Riggin's penstemon | |
| Scrophulariaceae | Penstemon | tubiflorus | white wand beardtongue | PF |
| Scrophulariaceae | Penstemon | tubiflorus | white wand beardtongue | PF |
| Scrophulariaceae | Penstemon | tubiflorus | white wand beardtongue | PF |
| Scrophulariaceae | Penstemon | tusharensis | Tushar Range beardtongue | PF |
| Scrophulariaceae | Penstemon | uintahensis | Uinta Mountain beardtongue | |
| Scrophulariaceae | Penstemon | unilateralis | oneside penstemon | |
| Scrophulariaceae | Penstemon | utahensis | Utah penstemon | PF |
| Scrophulariaceae | Penstemon | variabilis | Penstemon deustus var. variabilis | |
| Scrophulariaceae | Penstemon | vaseyanus | Penstemon rydbergii var. rydbergii | |
| Scrophulariaceae | Penstemon | venosus | Penstemon angustifolius var. venosus | |
| Scrophulariaceae | Penstemon | venustus | Venus penstemon | PF |
| Scrophulariaceae | Penstemon | virens | Front Range beardtongue | PF |
| Scrophulariaceae | Penstemon | virgatus | Penstemon deaveri | PF |
| Scrophulariaceae | Penstemon | virgatus | Penstemon unilateralis | PF |
| Scrophulariaceae | Penstemon | virgatus | Penstemon pseudoputus | PF |
| Scrophulariaceae | Penstemon | virgatus | Penstemon putus | PF |
| Scrophulariaceae | Penstemon | virgatus | Penstemon unilateralis | PF |
| Scrophulariaceae | Penstemon | virgatus | upright blue beardtongue | PF |
| Scrophulariaceae | Penstemon | wardii | Ward's beardtongue | PF |
| Scrophulariaceae | Penstemon | washingtonensis | Washington beardtongue | PF |
| Scrophulariaceae | Penstemon | watsonii | Penstemon laxus | PF |
| Scrophulariaceae | Penstemon | watsonii | Watson's penstemon | PF |
| Scrophulariaceae | Penstemon | wherryi | Penstemon arkansanus | |
| Scrophulariaceae | Penstemon | whippleanus | Whipple's penstemon | PF |
| Scrophulariaceae | Penstemon | whitedii | Penstemon eriantherus var. argillosus | |
| Scrophulariaceae | Penstemon | whitedii | Penstemon eriantherus var. redactus | |
| Scrophulariaceae | Penstemon | whitedii | Penstemon eriantherus var. whitedii | |
| Scrophulariaceae | Penstemon | wilcoxii | Wilcox's penstemon | |
| Scrophulariaceae | Penstemon | wisconsinensis | Penstemon gracilis var. wisconsinensis | |
| Scrophulariaceae | Penstemon | wrightii | Wright's beardtongue | PF |
| Scrophulariaceae | Penstemon | yampaensis | Yampa beardtongue | |
| Scrophulariaceae | Penstemon | ×crideri | ||
| Scrophulariaceae | Penstemon | ×dubius | ||
| Scrophulariaceae | Penstemon | ×jonesii | ||
| Scrophulariaceae | Penstemon | ×mirus | ||
| Scrophulariaceae | Penstemon | ×parishii | ||
| Scrophulariaceae | Penstemon | ×peirsonii |
More Info Legend:
PF = This entry exists in PlantFiles.