Question: Thermopsis rhombifolia could be found in the Great Plains, where do Great Plains could be found in the United States?

full_context: Document 1: Sorghastrum nutans: Sorghastrum nutans, commonly known as either Indiangrass or yellow Indiangrass, is a North American prairie grass found in the central and eastern United States and Canada, especially in the Great Plains and tallgrass prairies.
Document 2: Northern short grasslands: The Northern short grasslands is one of 867 terrestrial ecoregions defined by the World Wide Fund for Nature. This ecoregion includes parts of the Canadian provinces of Alberta and Saskatchewan, and the American Great Plains states of Montana, North Dakota, Wyoming, South Dakota and Nebraska. The United States Environmental Protection Agency (EPA) further breaks this ecoregion into the Northwestern Glaciated Plains and Northwestern Great Plains.
Document 3: Great Plains: The Great Plains (sometimes simply "the Plains") is the broad expanse of flat land (a plain), much of it covered in prairie, steppe and grassland, that lies west of the Mississippi River tallgrass prairie states and east of the Rocky Mountains in the United States and Canada. It embraces
Document 4: Tallgrass Prairie National Preserve: Tallgrass Prairie National Preserve is a United States National Preserve located in the Flint Hills region of Kansas, north of Strong City. The preserve protects a nationally significant example of the once vast tallgrass prairie ecosystem. Of the 400,000 square miles (1,000,000 km) of tallgrass prairie that once covered the North American continent, less than 4% remains, primarily in the Flint Hills. Since 2009, the preserve has been home to the growing Tallgrass Prairie bison herd.
Document 5: Thermopsis rhombifolia: Thermopsis rhombifolia, also known as prairie thermopsis, is a flowering plant in the legume family. It is native to Canada and the United States, where it is found in the Great Plains, with extensions into the lower canyons of the Rocky Mountains. Its natural habitat is dry grasslands and woodlands.
Document 6: Tallgrass Prairie National Preserve: Tallgrass Prairie National Preserve is a United States National Preserve located in the Flint Hills region of Kansas, north of Strong City. The preserve protects a nationally significant example of the once vast tallgrass prairie ecosystem. Of the 400,000 square miles (1,000,000 km) of tallgrass prairie that once covered the North American continent, less than 4% remains, primarily in the Flint Hills. Since 2009, the preserve has been home to the growing Tallgrass Prairie bison herd.
Document 7: Bossiaea rhombifolia: Bossiaea rhombifolia, is a species of flowering plant in the pea family found in eastern Australia. An upright shrub to two metres tall. Branches are hairless and mostly flat, particularly when young. A most attractive plant when in full flower.
Document 8: Tallgrass Prairie Preserve: The Tallgrass Prairie Preserve, located in Osage County, Oklahoma near Foraker, Oklahoma, is owned and managed by The Nature Conservancy. It is protected as the largest tract of remaining tallgrass prairie in the world. The preserve contains 39000 acre owned by the Conservancy and another 6000 acre leased in what was the original tallgrass region of the Great Plains that stretched from Texas to Manitoba.
Document 9: Schizachyrium scoparium: Schizachyrium scoparium, commonly known as little bluestem or beard grass, is a North American prairie grass native to most of the United States, except California, Nevada, and Oregon, and a small area north of the Canada–US border. Its greatest manifestation has always been in the Midwestern prairies. Little bluestem is a perennial bunchgrass and is prominent in tallgrass prairie, along with big bluestem ("Andropogon gerardi"), indiangrass ("Sorghastrum nutans") and switchgrass ("Panicum virgatum"). It is a warm-season species, meaning it employs the C photosynthetic pathway.
Document 10: Osage Plains: The Osage Plains are a physiographic section of the larger Central Lowland province, which in turn is part of the larger Interior Plains physiographic division. The area is sometimes called the Lower Plains, North Central Plains, and the Rolling Plains. The Osage Plains, covering west-central Missouri, the southeastern third of Kansas, most of central Oklahoma, and extending into north-central Texas, is the southernmost of three tallgrass prairie physiographic areas. It grades into savanna and woodland to the east and south, and into shorter mixed-grass prairie to the west. The Osage Plains consist of three subregions. The Osage Plains proper occupy the northeast segment. Although sharply demarcated from the Ozark uplift, the Plains are nonetheless a transitional area across which the boundary between prairie and woodland has shifted over time. In the central portion of the physiographic area lies the second subregion, the Flint Hills, commonly called "The Osage" in Oklahoma. This large remnant core of native tallgrass prairie is a rocky rolling terrain that run from north to south across Kansas and extends into Oklahoma. To the west and south of these hills are the Blackland Prairies and Cross Timbers. This vegetatively complex region of intermixed prairie and scrubby juniper-mesquite woodland extends into north-central Texas. Bluestem prairies and oak-dominated savannas and woodlands characterize the natural vegetation in the Cross Timbers. Much of the area has been converted to agriculture, although expanses of oak forest and woodland are still scattered throughout the eastern portion of the subregion.
Document 11: Pascopyrum: Pascopyrum is a monotypic genus of grass containing the sole species Pascopyrum smithii, which is known by the common name western wheatgrass, though the common nickname is red-joint wheatgrass, from the red coloration of the nodes. This is a sod-forming rhizomatous perennial grass which is native and common throughout most of North America. It grows in grassland and prairie in the Great Plains, where it is sometimes the dominant grass species. It is the state grass of North Dakota, South Dakota, and Wyoming.
Document 12: Echinacea angustifolia: Echinacea angustifolia (narrow-leaved purple coneflower or blacksamson echinacea) is a North American plant species in sunflower family. It is widespread across much of the Great Plains of central Canada and the central United States, with additional populations in nearby regions.
Document 13: Purshia stansburyana: Purshia stansburyana is a species of flowering plant in the rose family known by the common name Stansbury's cliffrose. It is native to the southwestern United States and northern Mexico, where it grows in woodlands, desert, and plateau habitat. It often grows anchored on cliffs and prefers rocky, granular soils, especially limestone.
Document 14: Liatris pycnostachya: Liatris pycnostachya (prairie blazing star) is a perennial plant native to the tallgrass prairies of the United States. "Liatris pycnostachya" is an erect perennial found in tallgrass prairie remnants in the Midwestern and Eastern United States. The plant reaches 1-3 ft in height "with numerous ascending linear leaves and magnificient, showy, compact spikes of rose pink blossoms.
Document 15: High Plains (United States): The High Plains are a subregion of the Great Plains mostly in the Western United States, but also partly in the Midwest states of Nebraska, Kansas, and South Dakota, generally encompassing the western part of the Great Plains before the region reaches the Rocky Mountains. The High Plains are located in southeastern Wyoming, southwestern South Dakota, western Nebraska, eastern Colorado, western Kansas, eastern New Mexico, western Oklahoma, and south of the Texas Panhandle. The southern region of the Western High Plains ecology region contains the geological formation known as Llano Estacado which can be seen from a short distance or from on satellite maps. From east to west, the High Plains rise in elevation from around 1160 ft to over 7800 ft .
ground_truth: west of the Mississippi River