Bromus japonicusHoutt.

WFO wfo-0001271396 Accepted WFO 2026-06 8 photographs CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Bromus japonicus, photographed by KAnatoliy
fig. a KAnatoliy, CC BY 4.0 / 2022-06-11 / obs. 205072521
Bromus japonicus, photographed by Alan Prather
fig. b Alan Prather, CC BY 4.0 / obs. 204342427
Bromus japonicus, photographed by Zinogre
fig. c Zinogre, CC BY-SA 4.0 / obs. 200732317
Bromus japonicus, photographed by Pavel Kacl
fig. d Pavel Kacl, CC BY 4.0 / obs. 199433336
Bromus japonicus, photographed by Annika Lindqvist
fig. e Annika Lindqvist, CC BY 4.0 / obs. 194829581
Bromus japonicus, photographed by Thomas Koffel
fig. f Thomas Koffel, CC BY 4.0 / obs. 166900560
Bromus japonicus, photographed by Clay
fig. g Clay, CC BY 4.0 / obs. 157995269
Bromus japonicus, photographed by Clay
fig. h Clay, CC BY 4.0 / obs. 156505307

Every figure is a research-grade observation under CC0, CC BY or CC BY-SA, rehosted with the photographer’s name, the licence and the observation it came from. Photographs under a NonCommercial licence are excluded from this site and are never stored, which costs us a great many pictures and is not negotiable.

Native range 56 botanical countries

Regions where Bromus japonicus is native: Algeria, Egypt, Morocco, Afghanistan, Altay, China North-Central, China South-Central, China Southeast, Cyprus, East Aegean Is., Gulf States, Inner Mongolia, Iran, Iraq, Japan, Kazakhstan, Kirgizstan, Korea, Krasnoyarsk, Lebanon-Syria, Manchuria, Mongolia, North Caucasus, Palestine, Primorye, Sinai, Tadzhikistan, Taiwan, Tibet, Transcaucasus, Türkiye, Turkmenistan, Uzbekistan, Xinjiang, Nepal, Pakistan, West Himalaya, Albania, Austria, Bulgaria, Czechia-Slovakia, East European Russia, France, Germany, Greece, Hungary, Italy, Kriti, Krym, NW. Balkan Pen., Poland, Romania, South European Russia, Switzerland, Türkiye-in-Europe, Ukraine AlgeriaEgyptMoroccoAfghanistanAltayChina North-CentralChina South-CentralChina SoutheastCyprusEast Aegean Is.Gulf StatesInner MongoliaIranIraqJapanKazakhstanKirgizstanKrasnoyarskLebanon-SyriaManchuriaMongoliaNorth CaucasusPalestinePrimoryeSinaiTadzhikistanTaiwanTibetTranscaucasusTürkiyeTurkmenistanUzbekistanXinjiangNepalPakistanWest HimalayaAlbaniaAustriaBulgariaCzechia-SlovakiaEast European RussiaFranceGermanyGreeceHungaryItalyKritiKrymNW. Balkan Pen.PolandRomaniaSouth European RussiaSwitzerlandTürkiye-in-EuropeUkraine Korea
Native distribution of Bromus japonicus, after Kew’s World Checklist of Vascular Plants. Introduced, extinct and doubtful records are excluded, so this is where the plant is from, not everywhere it now grows. Regions too small to draw at this scale are marked with a dot.
RegionTDWG codeContinent
Afghanistan AFG ASIA-TEMPERATE
Altay ALT
China North-Central CHN
China South-Central CHC
China Southeast CHS
Cyprus CYP
East Aegean Is. EAI
Gulf States GST
Inner Mongolia CHI
Iran IRN
Iraq IRQ
Japan JAP
Kazakhstan KAZ
Kirgizstan KGZ
Korea KOR
Krasnoyarsk KRA
Lebanon-Syria LBS
Manchuria CHM
Mongolia MON
North Caucasus NCS
Palestine PAL
Primorye PRM
Sinai SIN
Tadzhikistan TZK
Taiwan TAI
Tibet CHT
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Uzbekistan UZB
Xinjiang CHX
Albania ALB EUROPE
Austria AUT
Bulgaria BUL
Czechia-Slovakia CZE
East European Russia RUE
France FRA
Germany GER
Greece GRC
Hungary HUN
Italy ITA
Kriti KRI
Krym KRY
NW. Balkan Pen. YUG
Poland POL
Romania ROM
South European Russia RUS
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
Algeria ALG AFRICA
Egypt EGY
Morocco MOR
Nepal NEP ASIA-TROPICAL
Pakistan PAK
West Himalaya WHM

Region boundaries approximated from Natural Earth (public domain) and mapped to TDWG World Geographical Scheme for Recording Plant Distributions (WGSRPD) level-3 botanical countries (Brummitt 2001). Indicative, not the official WGSRPD geometry.

Also published as 78 synonyms

A synonym is not an error. It is a record of botanists disagreeing, in print, about where this plant belongs. Each of these was somebody’s considered answer.

  • Bromus abolinii Drobow
  • Bromus anatolicus Boiss. & Heldr.
  • Bromus annuus Jacq. ex Stapf
  • Bromus arvensis var. japonicus (Houtt.) Fiori
  • Bromus arvensis var. patulus (Mert. & W.D.J.Koch) Mutel
  • Bromus barobalianus G.Singh
  • Bromus chapprianus Stapf
  • Bromus chiapporianus De Not. ex Nyman
  • Bromus cyri Trin.
  • Bromus decumbens var. patulus (Mert. & W.D.J.Koch) Petif
  • Bromus erectus var. aequifolius Nees
  • Bromus hirtus Licht.
  • Bromus japonicus Thunb.
  • Bromus japonicus f. bosnensis Pénzes
  • Bromus japonicus f. luxurians (Döll) Soó
  • Bromus japonicus f. polyanthus Holmb.
  • Bromus japonicus f. tenuis (Prodan) Todor
  • Bromus japonicus f. variegatus (Schur) Soó
  • Bromus japonicus f. zomboriensis Prodan
  • Bromus japonicus subsp. phrygius (Boiss.) Pénzes
  • Bromus japonicus subsp. sooi Pénzes
  • Bromus japonicus subsp. subsquarrosus (Borbás) Pénzes
  • Bromus japonicus subsp. typicus Pénzes
  • Bromus japonicus var. anatolicus (Boiss. & Heldr.) Asch. & Graebn.

and 54 more.

Sourcesevery claim on this page

  1. World Flora Online Plant List. accepted name, authority, classification. CC0. Retrieved 2026-07-12.
  2. iNaturalist. photographs and flowering annotations, CC0 / CC BY / CC BY-SA only. per photograph. Retrieved 2026-06-27.
  3. Kew, World Checklist of Vascular Plants (WCVP v16). native distribution by TDWG level-3 botanical country, and life form. CC BY 3.0. Retrieved 2026-06-04.

We publish what we can source and we say so when we cannot. This page has no care advice and no toxicity claim, because we do not yet have those from a source we can cite.