Leymus

{{Short description|Genus of grasses}} {{Automatic taxobox | image = Leymus cinereus (5048924411).jpg | image_caption = ''Leymus cinereus'' | display_parents = 3 | taxon = Leymus | authority = Hochst. | type_species = ''Leymus arenarius'' | type_species_authority = (L.) Hochst.<ref name=j>[http://www.tropicos.org/Name/40006314 Tropicos, ''Leymus'' Hochst.]</ref> | synonyms_ref = <ref name=z>[http://apps.kew.org/wcsp/namedetail.do?name_id=422547 Kew World Checklist of Selected Plant Families]</ref> | synonyms = * ''Elymus'' sect. ''Leymus'' (Hochst.) Honda<ref name=j/> * ''Aneurolepidium'' Nevski * ''Eremium'' Seberg & Linde-Laursen * ''Macrohystrix'' (Tzvelev) Tzvelev & Prob. * ''Malacurus'' Nevski * ''Microhystrix'' (Tzvelev) Tzvelev & Prob. }} thumb|Mammoth wild rye (''Leymus racemosus'')

'''''Leymus''''' is a genus of plants in the grass family Poaceae (Gramineae). It is widespread across Europe, Asia, and the Americas.<ref name=j/><ref>[https://www.biodiversitylibrary.org/page/43043#page/119/mode/1up Hochstetter, Christian Ferdinand Friedrich. 1848. Flora 31(7): 118, in footnote] in German</ref><ref>[http://www.efloras.org/florataxon.aspx?flora_id=2&taxon_id=118489 Flora of China Vol. 22 Page 387 ''Leymus'' Hochstetter]</ref><ref>[http://bonap.net/NAPA/TaxonMaps/Genus/County/Leymus Biota of North America Program 2013 county distribution maps]</ref>

* ''Leymus aemulans'' - Xinjiang, Central Asia * ''Leymus ajanensis'' - Siberia, Russian Far East, Alaska * ''Leymus akmolinensis'' - Siberia, Kazakhstan, European Russia * ''Leymus alaicus'' - Central Asia * ''Leymus altus'' - Xinjiang * ''Leymus ambiguus'' - mountains of western US * ''Leymus angustus'' - Altai wild rye - China, Mongolia, Siberia, Central Asia * ''Leymus arenarius'' - lyme grass - Europe * ''Leymus aristiglumus'' - Qinghai * ''Leymus × buriaticus'' - Siberia * ''Leymus cappadocicus'' - Turkey, Afghanistan * ''Leymus chinensis'' - China, Korea, Mongolia, Amur, Siberia * ''Leymus cinereus'' - basin wild rye - western North America (US and Canada) * ''Leymus condensatus'' - giant wild rye - California, Baja California, Coahuila * ''Leymus crassiusculus'' - Qinghai, Shanxi * ''Leymus divaricatus'' - Kazakhstan * ''Leymus duthiei'' - China, Korea, Japan, Nepal, northern India * ''Leymus erianthus'' - Chile, Argentina * ''Leymus × fedtschenkoi'' - Kyrgyzstan * ''Leymus flavescens'' - Alberta, northwestern US * ''Leymus flexilis'' - Kyrgyzstan, Kazakhstan * ''Leymus flexus'' - Qinghai, Gansu, Shanxi * ''Leymus innovatus'' - from Alaska and Northwest Territories to South Dakota and Ontario * ''Leymus × jenisseiensis'' - Siberia * ''Leymus karelinii'' - Xinjiang, Central Asia, European Russia * ''Leymus komarovii'' - China, Mongolia, Korea, Russian Far East * ''Leymus kopetdaghensis'' - Turkmenistan * ''Leymus lanatus'' - Kyrgyzstan, Tajikistan, Afghanistan * ''Leymus latiglumis'' - Uzbekistan * ''Leymus leptostachyus'' - Qinghai, Xinjiang * ''Leymus mollis'' - colder parts of Asia and North America * ''Leymus multicaulis'' - European Russia, Central Asia, Xinjiang * ''Leymus × multiflorus'' - California * ''Leymus mundus'' - Tibet, Gansu * ''Leymus nikitinii'' - Turkmenistan * ''Leymus oblongolemmatus'' - Qinghai<ref>[http://www.ipni.org/ipni/idPlantNameSearch.do?id=77073079-1&back_page=%2Fipni%2FeditSimplePlantNameSearch.do%3Ffind_wholeName%3DLeymus%2Boblongolemmatus%26output_format%3Dnormal The International Plant Names Index]</ref> * ''Leymus obvipodus'' - Qinghai * ''Leymus ordensis'' - Siberia * ''Leymus paboanus'' - Russia, China, Mongolia, Central Asia, Afghanistan * ''Leymus pacificus'' - California * ''Leymus paucispiculus'' - Qinghai, Gansu * ''Leymus pendulus'' - Qinghai * ''Leymus pishanicus'' - Xinjiang * ''Leymus pluriflorus'' - Qinghai, Gansu * ''Leymus pseudoracemosus'' - Qinghai * ''Leymus pubinodis'' - Xinjiang * ''Leymus racemosus'' - mammoth wild rye - Eurasia from Bulgaria to Mongolia * ''Leymus × ramosoides'' - European Russia * ''Leymus ramosus'' - Eurasia from Crimea to Mongolia * ''Leymus ruoqiangensis'' - Xinjiang, Qinghai * ''Leymus salina'' - western US * ''Leymus secalinus'' - Siberia, Mongolia, China, Korea, Central Asia, Himalayas * ''Leymus shanxiensis'' - Shanxi * ''Leymus sibiricus'' - Russia from Altai Krai to Magadan * ''Leymus × sphacelatus'' - Tuva * ''Leymus spiniformis'' - Qinghai, Shanxi * ''Leymus tianschanicus'' - Iran, Central Asia, Xinjiang, Inner Mongolia * ''Leymus triticoides'' - creeping wild rye - British Columbia, western US, Baja California, Tamaulipas * ''Leymus × tuvinicus'' - Siberia * ''Leymus × vancouverensis'' - British Columbia, Washington, Oregon, California * ''Leymus villosissimus'' - Yakutia, Magadan, Kamchatka, Alaska, Yukon, Northwest Territories, British Columbia * ''Leymus yiunensis'' - Xinjiang

==Butterfly food plant== Butterflies whose caterpillars feed on ''Leymus'' include the Zabulon skipper. ==References== {{Reflist}}

Category:Leymus Category:Grasses of Africa Category:Grasses of Asia Category:Grasses of Europe Category:Grasses of North America Category:Grasses of South America Category:Poaceae genera Category:Taxa named by Christian Ferdinand Friedrich Hochstetter