''Elymus'' is a genus of perennial plants with approximately 150 species in the grass family, related to rye, wheat, and other widely grown cereal grains. ''Elymus'' is a cosmopolitan genus, represented by species across all continents of the world. Common names include couch grass, wildrye and wheatgrass.Biota of North America Program 2013 county distribution maps
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Species

Species accepted by the Plants of the World Online as of 2021: ref name=POWO> *'' Elymus abolinii'' *'' Elymus aenaeanus'' *'' Elymus afghanicus'' *'' Elymus africanus'' *'' Elymus alaskanus'' *'' Elymus albicans'' *'' Elymus alienus'' *'' Elymus alpinus'' *'' Elymus altissimus'' *'' Elymus amgensis'' *'' Elymus angsaiensis'' *'' Elymus angulatus'' *'' Elymus angustispiculatus'' *'' Elymus anthosachnoides'' *'' Elymus antiquus'' *'' Elymus × apiculatus'' *'' Elymus arcuatus'' *'' Elymus aristiglumis'' *'' Elymus arizonicus'' *'' Elymus athericus'' *'' Elymus atratus'' *'' Elymus bakeri'' *'' Elymus barbicallus'' *'' Elymus barystachyus'' *'' Elymus borianus'' *'' Elymus × brachyphyllus'' *'' Elymus brevipes'' *'' Elymus burchan-buddae'' *'' Elymus buschianus'' *'' Elymus cacuminis'' *'' Elymus caesifolius'' *'' Elymus caianus'' *'' Elymus calcicola'' *'' Elymus calderi'' *'' Elymus californicus'' *'' Elymus canadensis'' *'' Elymus caninus'' *'' Elymus caucasicus'' *'' Elymus cheniae'' *'' Elymus churchii'' *'' Elymus ciliaris'' *'' Elymus clivorum'' *'' Elymus colorans'' *'' Elymus confusus'' *'' Elymus cordilleranus'' *'' Elymus coreanus'' *'' Elymus curtiaristatus'' *'' Elymus curvatiformis'' *'' Elymus curvatus'' *'' Elymus × czilikensis'' *'' Elymus czimganicus'' *'' Elymus dahuricus'' *'' Elymus debilis'' *'' Elymus dentatus'' *'' Elymus diversiglumis'' *'' Elymus dolichatherus'' *'' Elymus dolichorhachis'' *'' Elymus × dorei'' *'' Elymus dorudicus'' *'' Elymus drobovii'' *'' Elymus durus'' *'' Elymus duthiei'' *'' Elymus × ebingeri'' *'' Elymus edelbergii'' *'' Elymus elymoides'' *'' Elymus erosiglumis'' *'' Elymus fedtschenkoi'' *'' Elymus festucoides'' *'' Elymus fibrosus'' *'' Elymus formosanus'' *'' Elymus glaberrimus'' *'' Elymus glaucissimus'' *'' Elymus glaucus'' *'' Elymus gmelinii'' *'' Elymus grandis'' *'' Elymus × hansenii'' *'' Elymus himalayanus'' *'' Elymus hirsutus'' *'' Elymus hitchcockii'' *'' Elymus hoffmannii'' *'' Elymus hondae'' *'' Elymus hongyuanensis'' *'' Elymus hordeoides'' *'' Elymus humidorum'' *'' Elymus humilis'' *'' Elymus hybridus'' *'' Elymus hystrix'' *'' Elymus × incertus'' *'' Elymus × interjacens'' *'' Elymus interruptus'' *'' Elymus intramongolicus'' *'' Elymus ircutensis'' *'' Elymus jacquemontii'' *'' Elymus jacutensis'' *'' Elymus karakabinicus'' *'' Elymus khokhrjakovii'' *'' Elymus kuramensis'' *'' Elymus lancangensis'' *'' Elymus lanceolatus'' *'' Elymus laxinodis'' *'' Elymus lazicus'' *'' Elymus leiotropis'' *'' Elymus lenensis'' *'' Elymus lolioides'' *'' Elymus longearistatus'' *'' Elymus longifolius'' *'' Elymus macgregorii'' *'' Elymus macrochaetus'' *'' Elymus macrourus'' *'' Elymus magellanicus'' *'' Elymus magnicaespes'' *'' Elymus magnipodus'' *'' Elymus × maltei'' *'' Elymus margaritae'' *'' Elymus × mayebaranus'' *'' Elymus mendocinus'' *'' Elymus × mossii'' *'' Elymus multisetus'' *'' Elymus mutabilis'' *'' Elymus nakaii'' *'' Elymus nepalensis'' *'' Elymus nipponicus'' *'' Elymus nodosus'' *'' Elymus × nothus'' *'' Elymus nutans'' *'' Elymus × palmerensis'' *'' Elymus panormitanus'' *'' Elymus patagonicus'' *'' Elymus pendulinus'' *'' Elymus petrovii'' *'' Elymus praeruptus'' *'' Elymus probatovae'' *'' Elymus pseudocaninus'' *'' Elymus × pseudorepens'' *'' Elymus puberulus'' *'' Elymus pulanensis'' *'' Elymus pungens'' *'' Elymus purpurascens'' *'' Elymus qingnanensis'' *''

Elymus repens ''Elymus repens'', commonly known as couch grass, is a very common perennial species of grass native to most of Europe, Asia, the Arctic biome, and northwest Africa. It has been brought into other mild northern climates for forage or erosion cont ...

'' *'' Elymus retroflexus'' *'' Elymus rhodopaeus'' *'' Elymus riparius'' *'' Elymus russellii'' *'' Elymus sajanensis'' *'' Elymus × saundersii'' *'' Elymus × saxicola'' *'' Elymus scabridulus'' *'' Elymus scabrifolius'' *'' Elymus scabriglumis'' *'' Elymus schrenkianus'' *'' Elymus schugnanicus'' *'' Elymus sclerophyllus'' *'' Elymus scribneri'' *'' Elymus semicostatus'' *'' Elymus serotinus'' *'' Elymus serpentinus'' *'' Elymus shandongensis'' *'' Elymus shirazicus'' *'' Elymus shouliangiae'' *'' Elymus sibinicus'' *'' Elymus sibiricus'' *'' Elymus sikkimensis'' *'' Elymus sinkiangensis'' *'' Elymus sinoflexuosus'' *'' Elymus sinosubmuticus'' *'' Elymus smithii'' *'' Elymus × spurius'' *'' Elymus stebbinsii'' *'' Elymus stenostachyus'' *'' Elymus strictus'' *'' Elymus svensonii'' *'' Elymus sylvaticus'' *'' Elymus tenuis'' *'' Elymus tenuispicus'' *'' Elymus texensis'' *'' Elymus tibeticus'' *'' Elymus tilcarensis'' *'' Elymus transhyrcanus'' *'' Elymus trichospicula'' *'' Elymus tridentatus'' *'' Elymus troctolepis'' *'' Elymus tsukushiensis'' *'' Elymus uralensis'' *'' Elymus × versicolor'' *'' Elymus villosus'' *'' Elymus violaceus'' *'' Elymus virginicus'' *'' Elymus viridulus'' *'' Elymus vulpinus'' *'' Elymus wawawaiensis'' *'' Elymus yangiae'' *'' Elymus × yukonensis'' *'' Elymus yushuensis'' *'' Elymus zadoiensis'' *'' Elymus zejensis'' *'' Elymus zhui''

Older classifications

Many species once considered members of ''Elymus'' are now regarded as better suited to other genera: ''

Agropyron ''Agropyron'' is a genus of Eurasian plants in the Poaceae, grass family), native to Europe and Asia but widely naturalized in North America. Species in the genus are common name, commonly referred to as wheatgrass. ; Species * ''Agropyron bada ...

'', '' Anthosachne'', '' Brachypodium'', '' Cenchrus'', '' Crithopsis'', '' Heteranthelium'', '' Jouvea'', ''

Kengyilia ''Kengyilia'' is a genus of Asian plants in the grass family. The genus is named in honor of Yi Li Keng. ; Species * '' Kengyilia alatavica'' (Drobow) J.L.Yang, C.Yen & B.R.Baum - Gansu, Xinjiang, Tibet, Mongolia, Kazakhstan, Kyrgyzstan * '' Ken ...

'', ''

Leymus ''Leymus'' is a genus of plants in the grass family Poaceae (Gramineae). It is widespread across Europe, Asia, and the Americas. * ''Leymus aemulans'' - Xinjiang, Central Asia * ''Leymus ajanensis'' - Siberia, Russian Far East, Alaska * '' Ley ...

'', '' Psathyrostachys'', '' Stenostachys'', '' Taeniatherum'', '' Thinopyrum'' etc.

References

External links

*
Jepson Manual Treatment

{{Clear Poaceae genera Grasses of Asia Grasses of Europe Grasses of North America Grasses of South America Taxa named by Carl Linnaeus