Penstemon albomarginatus is a rare species of penstemon known by the common name white-margined penstemon. It is native to the deserts of southern Nevada, western Arizona, and southern California.
Penstemon anguineus is a species of penstemon known by the common name Siskiyou penstemon. It is native to the mountains of southern Oregon and northern California, where it grows in coniferous forests, often in open areas left by logging operations.
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 bicolor is a species of penstemon known by the common name pinto penstemon. It is native to the desert mountains and valleys of southern Nevada, eastern California, and western Arizona, where it grows in scrub, woodland, and other local habitat. It is a perennial herb which may exceed one meter in maximum height.
Penstemon calcareus is a species of penstemon known by the common name limestone penstemon. It is native to California, where it is known from the deserts of central San Bernardino County, as well as the Death Valley area, where its distribution extends just over the border into Nevada. It grows in scrub and woodland, often on limestone substrates.
Penstemon cinicola is a species of penstemon known by the common name ash penstemon. It is native to northeastern California and southern Oregon, where it grows in forests and plateau habitat.
Penstemon clevelandii is a species of penstemon known by the common name Cleveland penstemon. It is native to southern California and Baja California, where it grows in mountain and desert habitat such as scrub, woodland, and chaparral.
Penstemon deustus is a species of penstemon known by the common names hotrock penstemon and scabland penstemon. It is native to much of the northwestern United States from the Pacific Northwest to Wyoming, where it grows in many types of forest and open plateau habitat, often on soils heavy in volcanic rock or on limestone outcrops.
Penstemon floridus is a species of flowering plant in the plantain family known by the common names Panamint penstemon and rose penstemon.
Penstemon fruticiformis is a species of penstemon known by the common name Death Valley penstemon. It is native to the western United States, where it is found growing in rocky scrub, woodlands, deserts and mountains of eastern California and western Nevada. It is known from scattered occurrences around Death Valley, and only one of the two varieties occurs on the Nevada side of the border.
Penstemon franklinii, or Franklin penstemon, is a plant species endemic to Utah, United States, known only from Cedar Valley in Iron County. It grows in grasslands and in sagebrush communities.
Penstemon comarrhenus is a perennial plant in the plantain family (Plantaginaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States.
Penstemon cyanocaulis, the bluestem penstemon or bluestem beardtongue, is a perennial plant in the plantain family (Plantaginaceae) found in the Colorado Plateau and Canyonlands region of the southwestern United States.
Penstemon cobaea is a flowering plant in the plantain family, commonly known as Cobaea beardtongue, prairie penstemon or foxglove penstemon. The plant is native to the central United States, primarily the Great Plains from Nebraska to Texas, with additional populations in the Ozarks of Missouri and Arkansas. There are also populations reported in the southwestern United States as well as in Illinois and Ohio, but these appear to be introductions.
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 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.
Penstemon ophianthus, the coiled anther penstemon, is a species of small perennial plant in the plantain family. It has very noticeable dark violet lines on its flowers over a lighter blue-lavender color. The species grows in the plateaus and canyon lands of western Colorado and New Mexico, northern Arizona, and southern Utah.
Penstemon moffatii, commonly called Moffat penstemon, is a flowering plant from the mesas and canyons of western Colorado and eastern Utah.
