''Ptilagrostis'' is a genus of

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

es in the family

Poaceae 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 cultivate ...

. They are distributed in

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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 ...

.Flora of China Vol. 22 Page 204 细柄茅属 xi bing mao shu ''Ptilagrostis'' Grisebach in Ledebour, Fl. Ross. 4: 447. 1852.
/ref> They are known commonly as false needlegrasses.''Ptilagrostis''.
Integrated Taxonomic Information System (ITIS). Plants of this genus were originally separated from the genus ''

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 ...

'',Hamasha, H. R., et al. (2012)
''Stipa'' (Poaceae) and allies in the Old World: molecular phylogenetics realigns genus circumscription and gives evidence on the origin of American and Australian lineages.
''Plant Systematics and Evolution'' 298(2), 351-67. and their relationship to that genus is still unclear. Some authorities still include them in ''Stipa'',''Ptilagrostis''.
Germplasm Resources Information Network (GRIN). sometimes classifying ''Ptilagrostis'' as a section of that genus. Some species are difficult to separate, being intermediate in form. Most ''Ptilagrostis'' are variable plants. Many species have several forms and variants. The genus is characterized in part by the papery, toothed

lemmas Lemma (from Ancient Greek ''premise'', ''assumption'', from Greek ''I take'', ''I get'') may refer to: Language and linguistics * Lemma (morphology), the canonical, dictionary or citation form of a word * Lemma (psycholinguistics), a mental a ...

of the spikelets, which have bent, plume-haired awns and do not overlap. This character separates the genus from ''Stipa'' and another close relative, the genus ''

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 ...

''.Peterson, P. M., et al. (2005)
''Ptilagrostis luquensis'' (Poaceae: Pooideae: Stipeae: Stipinae), a new species from China.
''Sida'' 21, 1355-62. ''Ptilagrostis'' species are generally tufted perennial grasses with erect stems. The spikelets are borne in an open or somewhat open

panicle In botany, a panicle is a much-branched inflorescence. (softcover ). Some authors distinguish it from a compound spike inflorescence, by requiring that the flowers (and fruit) be pedicellate (having a single stem per flower). The branches of a p ...

. Each has one flower. The awn is twisted and bent once or twice. ; SpeciesKew World Checklist of Selected Plant Families
/ref>GRIN Species Records of ''Ptilagrostis''.
Germplasm Resources Information Network (GRIN). * '' Ptilagrostis alpina'' -

Russia Russia, or the Russian Federation, is a country spanning Eastern Europe and North Asia. It is the list of countries and dependencies by area, largest country in the world, and extends across Time in Russia, eleven time zones, sharing Borders ...

(

Khabarovsk Khabarovsk ( ) is the largest city and the administrative centre of Khabarovsk Krai, Russia,Law #109 located from the China–Russia border, at the confluence of the Amur and Ussuri Rivers, about north of Vladivostok. As of the 2021 Russian c ...

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Zabaykalsky Krai Zabaykalsky Krai is a federal subjects of Russia, federal subject of Russia (a krai), located in the Russian Far East. Its administrative center is Chita, Zabaykalsky Krai, Chita. As of the Russian Census (2010), 2010 Census, the population was ...

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Ptilagrostis concinna ''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.Gansu Gansu is a provinces of China, province in Northwestern China. Its capital and largest city is Lanzhou, in the southeastern part of the province. The seventh-largest administrative district by area at , Gansu lies between the Tibetan Plateau, Ti ...

Qinghai Qinghai is an inland Provinces of China, province in Northwestern China. It is the largest provinces of China, province of China (excluding autonomous regions) by area and has the third smallest population. Its capital and largest city is Xin ...

Shaanxi Shaanxi is a Provinces of China, province in north Northwestern China. It borders the province-level divisions of Inner Mongolia to the north; Shanxi and Henan to the east; Hubei, Chongqing, and Sichuan to the south; and Gansu and Ningxia to t ...

Sichuan Sichuan is a province in Southwestern China, occupying the Sichuan Basin and Tibetan Plateau—between the Jinsha River to the west, the Daba Mountains to the north, and the Yunnan–Guizhou Plateau to the south. Its capital city is Cheng ...

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, Jammu-Kashmir,

Himachal Pradesh Himachal Pradesh (; Sanskrit: ''himācāl prādes;'' "Snow-laden Mountain Province") is a States and union territories of India, state in the northern part of India. Situated in the Western Himalayas, it is one of the thirteen Indian Himalayan ...

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* '' Ptilagrostis dichotoma'' -

Gansu Gansu is a provinces of China, province in Northwestern China. Its capital and largest city is Lanzhou, in the southeastern part of the province. The seventh-largest administrative district by area at , Gansu lies between the Tibetan Plateau, Ti ...

Inner Mongolia Inner Mongolia, officially the Inner Mongolia Autonomous Region, is an Autonomous regions of China, autonomous region of China. Its border includes two-thirds of the length of China's China–Mongolia border, border with the country of Mongolia. ...

India India, officially the Republic of India, is a country in South Asia. It is the List of countries and dependencies by area, seventh-largest country by area; the List of countries by population (United Nations), most populous country since ...

* '' Ptilagrostis junatovii'' -

Altai Krai Altai Krai (, ) is a federal subject of Russia (a krai). It borders, clockwise from the west, Kazakhstan ( East Kazakhstan Region, Abai Region and Pavlodar Region), Novosibirsk and Kemerovo, and the Altai Republic. The krai's administrative ce ...

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Kazakhstan Kazakhstan, officially the Republic of Kazakhstan, is a landlocked country primarily in Central Asia, with a European Kazakhstan, small portion in Eastern Europe. It borders Russia to the Kazakhstan–Russia border, north and west, China to th ...

Mongolia Mongolia is a landlocked country in East Asia, bordered by Russia to the north and China to the south and southeast. It covers an area of , with a population of 3.5 million, making it the world's List of countries and dependencies by po ...

* '' Ptilagrostis kingii'' -

Sierra Nevada The Sierra Nevada ( ) is a mountain range in the Western United States, between the Central Valley of California and the Great Basin. The vast majority of the range lies in the state of California, although the Carson Range spur lies primari ...

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* '' Ptilagrostis luquensis'' -

* '' Ptilagrostis malyschevii'' -

* '' Ptilagrostis milleri'' -

Nobis, M. and A. Nobis. (2013)
''Ptilagrostis milleri'' comb. nov. (Poaceae: Stipeae).
''Nordic Journal of Botany'' 31(5), 623–25. * '' Ptilagrostis mongholica'' -

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Heilongjiang Heilongjiang is a province in northeast China. It is the northernmost and easternmost province of the country and contains China's northernmost point (in Mohe City along the Amur) and easternmost point (at the confluence of the Amur and Us ...

Jilin ) , image_skyline = Changbaishan Tianchi from western rim.jpg , image_alt = , image_caption = View of Heaven Lake , image_map = Jilin in China (+all claims hatched).svg , mapsize = 275px , map_al ...

Liaoning ) , image_skyline = , image_alt = , image_caption = Clockwise: Mukden Palace in Shenyang, Xinghai Square in Dalian, Dalian coast, Yalu River at Dandong , image_map = Liaoning in China (+all claims hatched).svg , ...

Shanxi Shanxi; Chinese postal romanization, formerly romanised as Shansi is a Provinces of China, province in North China. Its capital and largest city of the province is Taiyuan, while its next most populated prefecture-level cities are Changzhi a ...

, Jammu-Kashmir,

Siberia Siberia ( ; , ) is an extensive geographical region comprising all of North Asia, from the Ural Mountains in the west to the Pacific Ocean in the east. It has formed a part of the sovereign territory of Russia and its predecessor states ...

* '' Ptilagrostis pellioti'' -

Ningxia Ningxia, officially the Ningxia Hui Autonomous Region, is an autonomous region in Northwestern China. Formerly a province, Ningxia was incorporated into Gansu in 1954 but was later separated from Gansu in 1958 and reconstituted as an autonomous ...

* ''

Ptilagrostis porteri ''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.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 ...

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 ...

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* '' Ptilagrostis schischkinii'' -

* '' Ptilagrostis yadongensis'' -

; formerly included see ''

'' * ''Ptilagrostis tianschanica - Stipa tianschanica''

References

{{Taxonbar, from=Q2604245 Poaceae genera Stipeae Taxa named by August Grisebach