''Oryzopsis'' is a genus of

Chinese Chinese may refer to: * Something related to China * Chinese people, people identified with China, through nationality, citizenship, and/or ethnicity **Han Chinese, East Asian ethnic group native to China. **'' Zhonghua minzu'', the supra-ethnic ...

and

North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

n plants in the

grass family Poaceae ( ), also called Gramineae ( ), is a large and nearly ubiquitous family of monocotyledonous flowering plants commonly known as grasses. It includes the cereal grasses, bamboos, the grasses of natural grassland and species cultivated in ...

. Species from this genus are commonly called ricegrass.''Oryzopsis''
USDA Plants Database (24 Nov 2011) The name alludes to the resemblance between this genus and true rice, ''

Oryza ''Oryza'' is a genus of plants in the grass family. It includes the major food crop rice (species '' Oryza sativa'' and '' Oryza glaberrima''). Members of the genus grow as tall, wetland grasses, growing to tall; the genus includes both annua ...

.'' ; Species * ''

Oryzopsis asperifolia ''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.''Oryzopsis asperifolia''
USDA Plants Database (24 Nov 2011) - Canada (all 10 provinces plus

Yukon Yukon () is a Provinces and territories of Canada, territory of Canada, bordering British Columbia to the south, the Northwest Territories to the east, the Beaufort Sea to the north, and the U.S. state of Alaska to the west. It is Canada’s we ...

Northwest Territories The Northwest Territories is a federal Provinces and territories of Canada, territory of Canada. At a land area of approximately and a 2021 census population of 41,070, it is the second-largest and the most populous of Provinces and territorie ...

), United States (

Northeast The points of the compass are a set of horizontal, radially arrayed compass directions (or azimuths) used in navigation and cartography. A '' compass rose'' is primarily composed of four cardinal directions—north, east, south, and west—eac ...

Great Lakes The Great Lakes, also called the Great Lakes of North America, are a series of large interconnected freshwater lakes spanning the Canada–United States border. The five lakes are Lake Superior, Superior, Lake Michigan, Michigan, Lake Huron, H ...

Black Hills The Black Hills is an isolated mountain range rising from the Great Plains of North America in western South Dakota and extending into Wyoming, United States. Black Elk Peak, which rises to , is the range's highest summit. The name of the range ...

Rocky Mountains The Rocky Mountains, also known as the Rockies, are a major mountain range and the largest mountain system in North America. The Rocky Mountains stretch in great-circle distance, straight-line distance from the northernmost part of Western Can ...

)Biota of North American Biota Program 2013 county distribution map
/ref> * ''

Oryzopsis chinensis ''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.Oryzopsis contracta ''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.Colorado Colorado is a U.S. state, state in the Western United States. It is one of the Mountain states, sharing the Four Corners region with Arizona, New Mexico, and Utah. It is also bordered by Wyoming to the north, Nebraska to the northeast, Kansas ...

Wyoming Wyoming ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States, Western United States. It borders Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho t ...

Montana Montana ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States. It is bordered by Idaho to the west, North Dakota to the east, South Dakota to the southeast, Wyoming to the south, an ...

* ''

Oryzopsis exigua ''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.Wyoming Wyoming ( ) is a landlocked U.S. state, state in the Mountain states, Mountain West subregion of the Western United States, Western United States. It borders Montana to the north and northwest, South Dakota and Nebraska to the east, Idaho t ...

* ''

Oryzopsis hendersonii ''Oryzopsis'' is a genus of China, Chinese and North American plants in the Poaceae, grass family. Species from this genus are commonly called ricegrass.Oregon Oregon ( , ) is a U.S. state, state in the Pacific Northwest region of the United States. It is a part of the Western U.S., with the Columbia River delineating much of Oregon's northern boundary with Washington (state), Washington, while t ...

Idaho Idaho ( ) is a landlocked U.S. state, state in the Pacific Northwest and Mountain states, Mountain West subregions of the Western United States. It borders Montana and Wyoming to the east, Nevada and Utah to the south, and Washington (state), ...

Washington state Washington, officially the State of Washington, is a state in the Pacific Northwest region of the United States. It is often referred to as Washington State to distinguish it from the national capital, both named after George Washington ...

* ''

Oryzopsis holciformis ''Piptatherum holciforme'' is an Old World species of cereal grass known by the common names rice grass, hairy ricegrass, and hairy millet grass. The seed of the plant is a type of grain millet. Description ''Piptatherum holciforme'' is perennia ...

'' (syn. ''

Piptatherum holciforme ''Piptatherum holciforme'' is an Old World species of cereal grass known by the common names rice grass, hairy ricegrass, and hairy millet grass. The seed of the plant is a type of grain millet. Description ''Piptatherum holciforme'' is perennia ...

'' (M.Bieb.) Roem. & Schult.) -

Israel Israel, officially the State of Israel, is a country in West Asia. It Borders of Israel, shares borders with Lebanon to the north, Syria to the north-east, Jordan to the east, Egypt to the south-west, and the Mediterranean Sea to the west. Isr ...

* ''

Oryzopsis hymenoides ''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.North America North America is a continent in the Northern Hemisphere, Northern and Western Hemisphere, Western hemispheres. North America is bordered to the north by the Arctic Ocean, to the east by the Atlantic Ocean, to the southeast by South Ameri ...

from

British Columbia British Columbia is the westernmost Provinces and territories of Canada, province of Canada. Situated in the Pacific Northwest between the Pacific Ocean and the Rocky Mountains, the province has a diverse geography, with rugged landscapes that ...

Alberta Alberta is a Provinces and territories of Canada, province in Canada. It is a part of Western Canada and is one of the three Canadian Prairies, prairie provinces. Alberta is bordered by British Columbia to its west, Saskatchewan to its east, t ...

California California () is a U.S. state, state in the Western United States that lies on the West Coast of the United States, Pacific Coast. It borders Oregon to the north, Nevada and Arizona to the east, and shares Mexico–United States border, an ...

New Mexico New Mexico is a state in the Southwestern United States, Southwestern region of the United States. It is one of the Mountain States of the southern Rocky Mountains, sharing the Four Corners region with Utah, Colorado, and Arizona. It also ...

* ''

Oryzopsis pungens ''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.Oryzopsis swallenii ''Oryzopsis'' is a genus of Chinese and North American plants in the grass family. Species from this genus are commonly called ricegrass.Idaho Idaho ( ) is a landlocked U.S. state, state in the Pacific Northwest and Mountain states, Mountain West subregions of the Western United States. It borders Montana and Wyoming to the east, Nevada and Utah to the south, and Washington (state), ...

; formerly included numerous species once regarded as members of ''Oryzopsis'' but now considered better suited to other genera: ''

Achnatherum ''Achnatherum'' is a genus of flowering plants in the grass family, Poaceae. It includes 20 species of needlegrass native to temperate Eurasia and North Africa. Several needlegrass species have been switched between ''Achnatherum'' and genus ''St ...

Achnella

Anemanthele ''Anemanthele'' is a genus of plants in the grass family native to New Zealand. The only known species is ''Anemanthele lessoniana'', often called gossamer grass or New Zealand wind grass or pheasant's tail grass. This is a naturally rare g ...

Eriocoma ''Eriocoma'' is a genus of plants in the grass family (Poaceae). It includes 27 species of grasses native to western and central North America. Species range from Alaska through western and central Canada, western and central United States, to no ...

Nassella ''Nassella'', or needlegrass, is a New World genus of over 100 perennial bunchgrasses found from North America through South America. The Latin word ''nassa'' refers to "a basket with a narrow neck". It is usually considered segregate from the ge ...

Piptatherum Piptatheropsis

Piptochaetium ''Piptochaetium'', or speargrass, is a genus of plants in the grass family, native to North and South America. ''Piptochaetium'' is a bunchgrass genus in the tribe Stipeae.Clayton, W. D., et al. (2006 onwards)''Piptochaetium''.GrassBase - The On ...

Ptilagrostis ''Ptilagrostis'' is a genus of grasses in the family Poaceae. They are distributed in Asia and North America. They are known commonly as false needlegrasses.Stipa ''Stipa'' is a genus of 141 species of large Perennial plant, perennial hermaphrodite, hermaphroditic grasses collectively known as feather grass, needle grass, and spear grass. They are placed in the subfamily Pooideae and the tribe Stipeae, w ...

Stiporyzopsis''

References

Stipeae Grasses of North America Grasses of Asia Poaceae genera Taxa named by André Michaux {{Pooideae-stub