Penstemon digitalis is a species of flowering plant in the plantain family, Plantaginaceae. The flowers are white and are borne in summer. It is native to eastern Canada and the eastern and southeastern United States. Penstemon digitalis is the most widespread species of Penstemon east of the Mississippi River.
Nothochelone is a monotypic genus of flowering plants in the plantain family containing the single species Nothochelone nemorosa, which is known by the common name woodland beardtongue. Originally described as Penstemon nemorosus, the plant is very similar in appearance to the penstemons, but was separated and placed into its own genus on the basis of slight morphological differences, such as winged seeds.
Penstemon barnebyi is a species of penstemon known by the common names White River Valley beardtongue and Barneby's beardtongue. It is native to the mountain and basin territory of central western Nevada, where it grows in sagebrush and woodland; there is also one occurrence just over the California border.
Penstemon caesius, commonly known as the San Bernardino penstemon, is a low growing species of flowering plant. It is endemic to California, where it is known from the San Bernardino and San Gabriel Mountains, as well as the southern mountains of the Sierra Nevada. It is a member of the flora on rocky slopes and in coniferous forests and alpine habitat in the mountains.
Penstemon rupicola is a species of penstemon known by the common names cliff beardtongue or rock penstemon. It is native to the west coast of the United States from Washington to the Klamath Mountains of far northern California, where it grows in rocky mountainous habitat. It is a clumpy, mat-forming subshrub growing no more than 14 centimeters high. The thick, waxy, oppositely arranged leaves are round or oval and up to 2 centimeters long. The showy wide-mouthed tubular flowers emerging from the mat may be nearly 4 centimeters in length and are shades of light purple to bright pink.
Penstemon grandiflorus, known by the common names shell-leaved penstemon, shell-leaf beardtongue, or large-flowered penstemon, is a tall and showy plant in the Penstemon genus from the plains of North America. Due to its large flowers it has found a place in gardens, particularly ones aimed at low water usage like xeriscape gardens.
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.
Hesperidanthus argillaceus, syn. Schoenocrambe argillacea, is a species of flowering plant in the mustard family, known by the common names clay reed-mustard, Uinta Basin plainsmustard, and clay thelypody.
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 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 canescens is a species of penstemon in the family Plantaginaceae. P. canescens is known by the common names gray beardtongue or Appalachian beardtongue. It is native to woodlands, forest edges, and roadsides of the southeastern United States and flowers May through July. It is a perennial herb producing stems reaching 80 centimeters in maximum height.
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 cyaneus is a species of flowering plant in the plantain family known by the common names blue penstemon and dark-blue beardtongue. It is native to the western United States, where it is widespread in Idaho, Montana, and Wyoming.
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 brevisepalus, commonly known as short-sepaled beardtongue, is an herbaceous plant in the plantain family. It is a perennial that produces pale lavender flowers in late spring.
Penstemon calycosus, commonly called long-sepal beardtongue, is a species of plant in the plantain family (Plantaginaceae). It is native to eastern North America, where it native to the Upper South and Midwestern United States. It expanded its range into the northeast United States in the early 20th century. Its natural habitat is in open woodlands, prairies, and bluffs, often over limestone.
Penstemon australis is a perennial plant native to the southeastern United States, with the common name Eustis Lake penstemon.
Penstemon pruinosus is a species of flowering plant in the plantain family; its common name is the Chelan penstemon. It is native to Washington State and southern British Columbia on the east side of the Cascade Mountains.
Penstemon richardsonii is a species of flowering plant in the plantain family; its common name is cutleaf beardtongue or Richardson's beardtongue. It is native to the US states of Washington, Oregon and the Canadian province British Columbia.
