What is the name of the broad expanse of flat land in the western United States and western Canada  where the species of plant called the Polygonum sawatchense of the buckwheat family be found?
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Polygonum sawatchense Polygonum sawatchense is a North American species of plants in the buckwheat family. It in the western United States and western Canada, from the Pacific Coast to the western Great Plains, so from British Columbia south to California and east as far as New Mexico, Colorado, Saskatchewan, and the Dakotas.
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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
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Eriogonum evanidum Eriogonum evanidum is a rare species of wild buckwheat known by the common name vanishing wild buckwheat. It is native to southern California and Baja California, where it has been collected from widely scattered areas. Most historical occurrences are now extirpated and the plant has not been collected since 1967. Some sources suggest that it is probably extinct. The plant was described as a new species in 2004 using specimens that were set aside from a collection of "Eriogonum foliosum" on the basis of some morphological characteristics. The specimens came from several locations in the southern California mountains, including Bear Valley in the San Bernardino Mountains and Pine Valley east of San Diego.
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Eriogonum latens Eriogonum latens is a species of wild buckwheat known by the common name Inyo buckwheat. It is native to the western Great Basin region, in the eastern slopes of the Sierra Nevada and the Inyo Mountains of California and the White Mountains, which extend just into western Nevada. It is an uncommon member of the flora in the sagebrush and woodlands of these mountains, where it grows in granitic sandy soils.
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Eriogonum hookeri Eriogonum hookeri is a species of wild buckwheat known by the common name Hooker's buckwheat. It is native to the Intermountain West of the United States, where it grows in plateau and desert habitat.
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Eriogonum heracleoides Eriogonum heracleoides (common names parsnipflower buckwheat, whorled buckwheat, and Wyeth buckwheat) has many flowering clusters that are cream or off-white in color. Its usual habitat is rocky areas such as sagebrush deserts and Ponderosa pine forests. Parsnipflower buckwheat is in the genus "Eriogonum" and the family Polygonaceae which is a family of plants known as the "knotweed family". It inhabits much of the western part of the United States.
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Spiraea splendens Spiraea splendens is a shrub of the Rose Family (Rosaceae) native to the western mountains of North America, from California to British Columbia, commonly known as dense-flowered spiraea, rose meadowsweet, rosy spiraea, subalpine spiraea, and mountain spiraea. It is commonly found at elevations between 2,000 and 11,000 feet on inland mountain ranges. The plant is adapted to cold, moist, rocky slopes, subalpine forests and meadows.
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Eriogonum ovalifolium Eriogonum ovalifolium is a species of wild buckwheat known by the common name cushion buckwheat. It is native to western North America from California to Alberta, where it is a member of many plant communities in varied habitats.
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Eriogonum argillosum Eriogonum argillosum is a species of wild buckwheat known by the common names clay buckwheat, clay-loving buckwheat, and Coast Range wild buckwheat. It is endemic to California, where it is known only from San Benito and Monterey Counties. It grows on clay substrates, often of serpentine origin. This is an annual herb up to 30 to 60 centimeters tall with a basal patch of oval-shaped, woolly leaves and a naked stem. The top of the stem is occupied by the inflorescence, a cyme with several clusters of tiny white or pink flowers.
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Artemisia tridentata Artemisia tridentata, commonly called big sagebrush, Great Basin sagebrush or sagebrush, is an aromatic shrub from the family Asteraceae, which grows in arid and semi-arid conditions, throughout a range of cold desert, steppe, and mountain habitats in the Intermountain West of North America. The vernacular name "sagebrush" is also used for several related members of the genus "Artemisia", such as California Sagebrush ("Artemisia californica").
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Eriogonum plumatella Eriogonum plumatella is a species of wild buckwheat known by the common name yucca buckwheat. It is native to the desert southwest of the United States.
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Eriogonum brachypodum Eriogonum brachypodum is a species of wild buckwheat known by the common name Parry's buckwheat. This annual herb is native to the southwestern United States from California to Utah, especially the Mojave Desert, where it grows in sandy and gravelly substrates. It has a skeletonlike spindly stem which branches many times, reaching anywhere from 5 to 50 centimeters in height and up to a meter in width. There is an array of rounded, dark-colored leaves around the base, each a few centimeters long and fuzzy on the undersides. Most of the plant is actually the spreading inflorescence. At intervals on the otherwise naked branches hang tiny clusters of glandular flowers a few millimeters wide in involucres of bell-shaped bracts. Each flower is less than three millimeters wide.
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Snake River Plain (ecoregion) The Snake River Plain ecoregion is a Level III ecoregion designated by the United States Environmental Protection Agency (EPA) in the U.S. states of Idaho and Oregon. It follows the Snake River across Idaho, stretching roughly 400 mi from the Wyoming border to Eastern Oregon in the xeric intermontane west. Characterized by plains and low hills, it is considerably lower and less rugged than surrounding ecoregions. Many of the alluvial valleys bordering the Snake River are used for agriculture. Where irrigation water and soil depth are sufficient, sugar beets, potatoes, alfalfa, small grains, and vegetables are grown. Elsewhere, livestock grazing is widespread. Cattle feedlots and dairy operations are found locally.
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Ecology of the Rocky Mountains The ecology of the Rocky Mountains is diverse due to the effects of a variety of environmental factors. The Rocky Mountains are the major mountain range in western North America, running from the far north of British Columbia in Canada to New Mexico in the southwestern United States, climbing from the Great Plains at or below 1800 ft to peaks of over 14000 ft . Temperature and rainfall varies greatly also and thus the Rockies are home to a mixture of habitats including the alpine, subalpine and boreal habitats of the Northern Rocky Mountains in British Columbia and Alberta, the coniferous forests of Montana and Idaho, the wetlands and prairie where the Rockies meet the plains, a different mix of conifers on the Yellowstone Plateau in Wyoming and in the high Rockies of Colorado and New Mexico, and finally the alpine tundra of the highest elevations.
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Spartina pectinata Spartina pectinata is a species of cordgrass known by the common names prairie cordgrass, freshwater cordgrass, tall marshgrass, and sloughgrass. It is native to much of North America, including central and eastern Canada and most of the contiguous United States except for the southwestern and southeastern regions. Its distribution extends into Mexico. It is also present on other continents as an introduced species.
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Poa arida Poa arida is a species of grass known by the common names plains bluegrass and prairie speargrass. It is native to North America, where it occurs throughout western and central Canada and the central United States. It is most common east of the Continental Divide; specimens west are often misidentifications.
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Spartina gracilis Spartina gracilis is a species of grass known by the common name alkali cordgrass. It is native to western North America from northwestern Canada through the western United States and eastern California, and into central Mexico. It grows in moist alkaline habitat, such as evaporating streams and shorelines, alkali flats, and inland marshes.
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Polygonella americana Polygonella americana, commonly called southern jointweed or American jointweed, is a species of flowering plant in the knotweed family. It is native to Southeastern United States extending in scattered locations west to New Mexico. Its preferred habitat is dry, sandy areas.
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Pinguicula macroceras Pinguicula macroceras, the California butterwort or horned butterwort, is a species of perennial carnivorous herb that is native to the North American Pacific coast, as well as other select distributions in Canada, Russia, Japan, and the U.S.. Common names include California butterwort, horned butterwort and butterwort. "Pinguicula macroceras" belongs to the "Pinguicula" genus and the Lentibulariaceae family.
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North American Prairies Province The North American Prairies Province is a large grassland floristic province within the North American Atlantic Region, a floristic region within the Holarctic Kingdom. It lies between the Appalachian Province and the Rocky Mountains and includes the prairies of the Great Plains. It is bounded by the Canadian coniferous forests on the north and the arid semideserts to the southwest. The province itself is occupied by temperate grasslands, savannas, and shrublands (including such ecoregions as the Flint Hills tall grasslands, Sand Hills, High Plains). Endemism is rather limited in this province, and its boundaries are vague. During the Pleistocene much of the province was glaciated.
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Eriogonum gossypinum Eriogonum gossypinum is an uncommon species of wild buckwheat known by the common name cottony buckwheat. It is endemic to California, where it is known from the southern Central Valley and some of the adjacent foothills. It is often found on clay soils. It is an annual herb producing a gray or reddish branched stem no more than about 20 centimeters tall. The leaves are oblong in shape and woolly in texture. The scattered inflorescences are small clusters of white to pink glandular flowers buried in a layer of cottony fibers.
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Polygonum spergulariiforme Polygonum spergulariiforme is a North American species of flowering plants in the buckwheat family known by the common name spurry knotweed or fall knotweed. It grows in western Canada (British Columbia and Saskatchewan) and the western United States (primarily Washington, Oregon, and northern and central California but with a few isolated populations in Idaho, Wyoming and Montana).