''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 The Great Plains (french: Grandes Plaines), sometimes simply "the Plains", is a broad expanse of flatland in North America. It is located west of the Mississippi River and east of the Rocky Mountains, much of it covered in prairie, steppe, an ...

, so from

British Columbia British Columbia (commonly abbreviated as BC) is the westernmost province of Canada, situated between the Pacific Ocean and the Rocky Mountains. It has a diverse geography, with rugged landscapes that include rocky coastlines, sandy beaches, ...

south to

California California is a U.S. state, state in the Western United States, located along the West Coast of the United States, Pacific Coast. With nearly 39.2million residents across a total area of approximately , it is the List of states and territori ...

and east as far as

New Mexico ) , population_demonym = New Mexican ( es, Neomexicano, Neomejicano, Nuevo Mexicano) , seat = Santa Fe , LargestCity = Albuquerque , LargestMetro = Tiguex , OfficialLang = None , Languages = English, Spanish ( New Mexican), Navajo, Ker ...

Colorado Colorado (, other variants) is a state in the Mountain West subregion of the Western United States. It encompasses most of the Southern Rocky Mountains, as well as the northeastern portion of the Colorado Plateau and the western edge of t ...

Saskatchewan Saskatchewan ( ; ) is a Provinces and territories of Canada, province in Western Canada, western Canada, bordered on the west by Alberta, on the north by the Northwest Territories, on the east by Manitoba, to the northeast by Nunavut, and on t ...

, and the

Dakotas The Dakotas is a collective term for the U.S. states of North Dakota and South Dakota. It has been used historically to describe the Dakota Territory, and is still used for the collective heritage, culture, geography, fauna, sociology, econom ...

.Biota of North America Program 2014 county distribution map, ''Polygonum sawatchense''
/ref>Costea, Mihai & Tardif, Francois J. 2003. Sida 20(4): 1631-1640
includes descriptions of both subspecies plus line drawings and photos taken with scanning electron microscope ''Polygonum sawatchense'' is a branching, hairless herb up to tall. Leaves are narrow, up to long. Flowers are green, red, or white, in elongated arrays.Flora of North America, ''Polygonum sawatchense'' Small, 1893.
/ref>Small, John Kunkel 1893. Bulletin of the Torrey Botanical Club 20(5): 213–214
description in EnglishSmall, John Kunkel 1893. Bulletin of the Torrey Botanical Club 20(5): plate CLVI (156)
full-page line drawing of ''Polygonum sawatchense'' Species is named for the

Sawatch Range The Sawatch Range or Saguache RangeThe place name "Saguache” is pronounced “Sawatch” . This name derives from the Ute language noun "''sawup''" meaning "sand dunes" and is spelled using the Spanish language version of this name "Saguach ...

, where Brandegee collected the type specimen.> ;Subspecies *''Polygonum sawatchense'' subsp. ''oblivium'' Costea & Tardif -

Washington Washington commonly refers to: * Washington (state), United States * Washington, D.C., the capital of the United States ** A metonym for the federal government of the United States ** Washington metropolitan area, the metropolitan area centered on ...

Oregon Oregon () is a U.S. state, state in the Pacific Northwest region of the Western United States. The Columbia River delineates much of Oregon's northern boundary with Washington (state), Washington, while the Snake River delineates much of it ...

Idaho Idaho ( ) is a state in the Pacific Northwest region of the Western United States. To the north, it shares a small portion of the Canada–United States border with the province of British Columbia. It borders the states of Montana and Wyom ...

Nevada Nevada ( ; ) is a U.S. state, state in the Western United States, Western region of the United States. It is bordered by Oregon to the northwest, Idaho to the northeast, California to the west, Arizona to the southeast, and Utah to the east. N ...

*''Polygonum sawatchense'' subsp. ''sawatchense'' - from

Alberta Alberta ( ) is one of the thirteen provinces and territories of Canada. It is part of Western Canada and is one of the three prairie provinces. Alberta is bordered by British Columbia to the west, Saskatchewan to the east, the Northwest Ter ...

south to

Arizona Arizona ( ; nv, Hoozdo Hahoodzo ; ood, Alĭ ṣonak ) is a state in the Southwestern United States. It is the 6th largest and the 14th most populous of the 50 states. Its capital and largest city is Phoenix. Arizona is part of the Fou ...

References

sawatchense Flora of Western Canada Flora of the Western United States Flora of California Flora of the Rocky Mountains Flora of the Sierra Nevada (United States) Plants described in 1893 Flora without expected TNC conservation status {{Polygonaceae-stub