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''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 eriantherus''. ) Germplasm Resources Information Network (GRIN).〕 This species is a perennial herb growing from a woody caudex and thick taproot. It branches into several stems that reach up to 40 centimeters tall. Much of the herbage is coated in gray hairs, and the inflorescence can be glandular. The oppositely arranged leaves are up to 13 centimeters long and are sometimes slightly toothed along the edges. The flower is borne in a calyx of narrow, pointed sepals. The corolla is up to 4 centimeters long with a mouth up to 1.4 centimeters wide. It is lavender to reddish or bluish purple. The lower lip and the staminode are heavily bearded with yellowish hairs.〔(''Penstemon eriantherus''. ) Burke Museum of Natural History and Culture. University of Washington. 2013.〕〔(Crested Beardtongue (''Penstemon eriantherus''). ) Native Wildflowers of the North Dakota Grasslands. Northern Prairie Wildlife Research Center. USGS.〕 This plant grows on clay soils〔 in dry, open habitat.〔 In Washington it grows in plant communities dominated by antelope bitterbrush (''Purshia tridentata'') and Indian ricegrass (''Oryzopsis hymenoides''), purple sage (''Salvia dorrii'') and bluebunch wheatgrass (''Pseudoroegneria spicata''), and rabbitbrush (''Ericameria nauseosa'').〔(''Penstemon eriantherus'' var. ''whitedii'' (Whited's penstemon). ) Washington Department of Natural Resources, Washington Natural Heritage Program and Bureau of Land Management. 2005.〕 It occurs on rocky soils in sagebrush habitat. Its ability to live in a relatively rough habitat may help it persist in disturbed areas, such as eroded trails.〔Meinke, R. J. (Assessment of the genus ''Penstemon'' (Scrophulariaceae) within the Interior Columbia River Basin of Oregon and Washington. ) Interior Columbia Basin Ecosystem Management Project. 1995.〕 There are 5 varieties of this species:〔(''Penstemon eriantherus''. ) USDA PLANTS Profile.〕 *''Penstemon eriantherus'' var. ''argillosus'' (endemic to Oregon) *''Penstemon eriantherus'' var. ''cleburnei'' - Cleburn's penstemon *''Penstemon eriantherus'' var. ''eriantherus'' *''Penstemon eriantherus'' var. ''redactus'' - longsac penstemon *''Penstemon eriantherus'' var. ''whitedii'' - Whited's penstemon (endemic to Washington) ==References== 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Penstemon eriantherus」の詳細全文を読む スポンサード リンク
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