Links for Penstemon clutei to Wikipedia, Encyclopedia of Life, iNaturalist, IUCN Red List, and my website
Link to English Wikipedia entry: Sunset Crater Beardtongue
Link to German Wikipedia: Bartfaden
Link to French Wikipedia: Penstemon
Link to EOL.org: Penstemon clutei
Link to iNaturalist.org: Penstemon clutei
Don't have Red List Status for Penstemon clutei
Binomial Links for Penstemon clutei on aerobaticsweb.org
Dr. Günther Eichhorn Travel Website
Soaring website