Penstemon, the beardtongues, is a large genus of roughly 280 species of flowering plants native mostly to the Nearctic, but with a few species also found in the North American portion of the Neotropics. It is the largest genus of flowering plants endemic to North America. As well as being the scientific name, penstemon is also widely used as a common name for all Penstemon species alongside beardtongues.
Penstemon palmeri, known by the common name Palmer's penstemon, is a species of perennial flowering plant in the genus Penstemon that is notable for its showy, rounded flowers, and for being one of the few scented penstemons. The plant, in the family Plantaginaceae, is named after the botanist Edward Palmer.
Penstemon floridus is a species of flowering plant in the plantain family known by the common names Panamint beardtongue and rose penstemon.
Penstemon spectabilis is a species of penstemon known by the common name showy penstemon or showy beardtongue. It is native to southern California and Baja California, where it grows in the chaparral, scrub, and woodlands of the coastal mountain ranges.
Penstemon thompsoniae, Thompson's beardtongue, is a low perennial plant endemic to the southwestern United States, where it grows in dry shrublands, woodlands and forests. It is considered a species of conservation concern in California.
Penstemon penlandii is a rare species of flowering plant in the plantain family known by the common names Penland penstemon and Penland's beardtongue. It is endemic to Colorado in the United States, where it is known only from a strip of land about five miles long in central Grand County. There are two occurrences totalling about 8600 individuals. This is a federally listed endangered species of the United States.
Schoenocrambe argillacea is a rare species of flowering plant in the mustard family known by the common names clay reed-mustard, Uinta Basin plainsmustard, and clay thelypody.
Phacelia submutica is a rare species of flowering plant in the borage family known by the common name De Beque phacelia. It is endemic to Colorado in the United States, where it is limited to the Piceance Basin in two counties. It is threatened by petroleum exploration. It was federally listed as a threatened species of the United States on July 27, 2011, a ruling which took effect on August 26, 2011.
Penstemon navajoa is a rare species of flowering plant in the plantain family known by the common name Navajo Mountain beardtongue, or Navajo beardtongue. It is endemic to Utah in the United States, where it is known only from San Juan County.
Penstemon rhizomatosus is a rare species of flowering plant in the plantain family known by the common names Scheel Creek beardtongue and rhizome beardtongue. It is endemic to Nevada in the United States, where it occurs only in the Schell Creek Range of White Pine County.
Penstemon degeneri is a species of flowering plant in the plantain family known by the common name Degener's beardtongue. It is endemic to Colorado in the United States, where it occurs in and around the Arkansas River Canyon in Fremont, Custer, and Chaffee Counties.
Penstemon gibbensii is a species of flowering plant in the plantain family known by the common name Gibbens' beardtongue. It is native to the western United States, where it occurs in Wyoming, Colorado, and Utah.
Penstemon grahamii, known by the common names Uinta Basin beardtongue and Graham's beardtongue, is a species of flowering plant in the plantain family. It is native to Utah and Colorado in the United States.
Penstemon attenuatus is a species of flowering plant in the plantain family known by the common names sulphur penstemon and taperleaf beardtongue. It is native to the northwestern United States.
Penstemon eriantherus is a species of flowering plant in the plantain family known by the common names fuzzytongue penstemon and crested beardtongue. It is native to western North America, where it occurs in western Canada and the northwestern and north-central United States.
Penstemon linarioides is a plant species in the genus Penstemon. Its common names include toadflax penstemon, toadflax beardtongue and Colorado narrowleaf beardtongue. It grows in Nevada, Arizona, Utah, Colorado, and New Mexico.
Penstemon whippleanus, commonly known as dusky penstemon, dusky beardtongue, Whipple's penstemon, or Whipple's beardtongue, is a summer blooming perennial flower in the large Penstemon genus. It is a widespread plant within the hemiboreal forests of the Rocky Mountains in North America. It is noted for the large deep purple-red flowers and a preference for high mountain elevations.
Penstemon ambiguus, commonly known as the bush penstemon, pink plains penstemon, or gilia beardtongue is a species of Penstemon that grows in the shortgrass prairies and deserts of the western United States and northern Mexico. This bush like penstemon grows in sandy, loose, and creosote soils and is particularly known for the spectacular flowering show it produces, sometime seasons turning whole hillsides bright pink–white.
Penstemon caespitosus, commonly known as mat penstemon, is a summer blooming perennial flower in the large Penstemon genus. It is a widespread plant from near timberline to the foothills in the Southern Rocky Mountains and Colorado Plateau in North America. It is noted for its ground hugging growth habit and as a plant used in xeriscape and rock gardening.
