[PAR] [TLE] Polygonum sawatchense [SEP] 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. [PAR] [TLE] Great Plains [SEP] 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
[PAR] [TLE] Polygonum sawatchense [ SEP ] 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 . [PAR] [TLE] Great Plains [ SEP ] 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
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?
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 ?
The Great Plains
The Great Plains