Summary: these are some of the species of Section Glabri found from Wyoming to New Mexico to Nevada. My goal is to provide a brief account for each species as a quick glance reference. The hotspot of diversity and possible confusion is southern Utah and northern Arizona, where all except a few grow. The archetype of this group is Penstemon virgatus: https://swbiodiversity.org/imglib/h_seinet/seinet/Scrophulariaceae/photos/Penstemon-virgatus-FL-web-N.jpg
Montane forests:
Penstemon cyananthus - densely bearded staminode
Penstemon cyaneus
Penstemon deaveri
Penstemon glaber
Penstemon leiophyllus - short, white hairs on the inside of the upper corolla lobes that look like tiny sugar crystals
Penstemon navajoa
Penstemon neomexicanus
Penstemon nudiflorus
Penstemon putus
Penstemon pseudoputus
Penstemon speciosus - glabrous corollas
Penstemon strictus - woolly anthers
Penstemon virgatus virgatus
Desert, grasslands, and shrublands:
Penstemon commarhenus - extra woolly anthers, linear leaves
Penstemon laevis - glabrous corollas
Penstemon parvus - linear leaves
Penstemon strictiformis - woolly anthers
Penstemon subglaber
Penstemon virgatus asa-grayi (includes the former P unilateralis)
more descriptions will be added
Summary: this a grouping of species that inhabit similar habitats and ranges from Wyoming to New Mexico to Nevada. My goal is to provide a brief account for each species as a quick glance reference. This group is loosely divided from the plants with narrower leaves in part 3. The archetype of this group is Penstemon pachyphylus: https://storage.idigbio.org/portals/seinet/intermt/ENLC/ENLC01/Penstemon_pachyphyllus_var_con_1550003365.jpg
Penstemon acuminatus
Penstemon buckleyi
Penstemon carnosus
Penstemon fendleri
Penstemon immanifestus
Penstemon lentus
Penstemon osterhoutii
Penstemon pachyphylus
Penstemon versicolor
descriptions will be added soon
Summary: this a grouping of species that inhabit similar habitats and ranges from southern Canada to New Mexico to southern California. My goal is to provide a brief account for each species as a quick glance reference. This group is loosely divided from the plants with wide, leathery leaves in part 2. The archetype of this group is Penstemon angustifolius: https://swbiodiversity.org/imglib/h_seinet/seinet/misc/201412/Penstemon-angustifolius-P-web-_1419369141_web..jpg
Penstemon angustifolius
Penstemon arenicola
Penstemon centranthiafolius
Penstemon confusus
Penstemon grandiflorus
Penstemon haydenii
Penstemon nitidus
Penstemon patens
Penstemon secundiflorus
Penstemon utahensis
descriptions will be added soon
Summary: this a grouping of species that inhabit similar habitats and ranges from central Colorado to southern New Mexico. My goal is to provide a brief account for each species as a quick glance reference. This group does not have the clumping, whorled flowers of Penstemon procerus and rydbergii. The archetype of this group is Penstemon oliganthus: https://swbiodiversity.org/imglib/h_seinet/seinet/Scrophulariaceae/Penstemon_oliganthus_2sf.jpg
Penstemon degeneri
Penstemon griffinii
Penstemon inflatus
Penstemon metcalfei
Penstemon oliganthus
Penstemon pseudoparvus
descriptions will be added soon
Summary: this a grouping of species that inhabit similar habitats and ranges from Wyoming to New Mexico to southern California. My goal is to provide a brief account for each species as a quick glance reference. The archetype of this group is Penstemon caespitosus: https://swbiodiversity.org/imglib/h_seinet/seinet/genfield/palexander/set003/Penstemon_caes_14Jun08_9887.jpg
Penstemon abietinus
Penstemon acaulis
Penstemon caespitosus
Penstemon californicus
Penstemon crandalli
Penstemon discolor
Penstemon harbourii
Penstemon linarioides
Penstemon teucrioides
Penstemon thompsoniae
Penstemon yampaensis
Penstemon xylus
descriptions will be added soon
