Triglochin palustrisL.

Marsh Arrowgrassmarsh arrowgrass

WFO wfo-0000770196 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Triglochin palustris, photographed by Силаева Татьяна Борисовна
fig. a Силаева Татьяна Борисовна, CC0 1.0 / 2021-09-23 / obs. 159196312
Triglochin palustris, photographed by Aleksei Baushev
fig. b Aleksei Baushev, CC BY 4.0 / obs. 158431013
Triglochin palustris, photographed by Quinten Wiegersma
fig. c Quinten Wiegersma, CC BY 4.0 / obs. 149739494
Triglochin palustris, photographed by Ellyne Geurts
fig. d Ellyne Geurts, CC0 1.0 / obs. 165703012
Triglochin palustris, photographed by Tomas Pocius
fig. e Tomas Pocius, CC0 1.0 / obs. 148777623
Triglochin palustris, photographed by Aleksei Baushev
fig. f Aleksei Baushev, CC BY 4.0 / obs. 147586033
Triglochin palustris, photographed by Erin Springinotic
fig. g Erin Springinotic, CC0 1.0 / obs. 160774710
Triglochin palustris, photographed by Силаева Татьяна Борисовна
fig. h Силаева Татьяна Борисовна, CC0 1.0 / obs. 147462355

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 126 botanical countries

Regions where Triglochin palustris is native: Algeria, Morocco, Afghanistan, Altay, Amur, Buryatiya, China North-Central, China South-Central, Chita, Inner Mongolia, Iran, Iraq, Irkutsk, Japan, Kamchatka, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kuril Is., Magadan, Manchuria, Mongolia, North Caucasus, Palestine, Primorye, Qinghai, Sakhalin, Tadzhikistan, Tibet, Transcaucasus, Türkiye, Turkmenistan, Tuva, Uzbekistan, West Siberia, Xinjiang, Yakutiya, East Himalaya, Nepal, Pakistan, West Himalaya, New Zealand South, Albania, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Russia, Czechia-Slovakia, Denmark, East European Russia, Finland, Føroyar, France, Germany, Great Britain, Greece, Hungary, Iceland, Ireland, Italy, Krym, Netherlands, North European Russia, Northwest European Russia, Norway, NW. Balkan Pen., Poland, Romania, South European Russia, Spain, Sweden, Switzerland, Ukraine, Alaska, Alberta, Aleutian Is., Arizona, British Columbia, California, Colorado, Greenland, Idaho, Illinois, Indiana, Iowa, Labrador, Maine, Manitoba, Michigan, Minnesota, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Mexico, New York, Newfoundland, North Dakota, Northwest Territories, Nova Scotia, Nunavut, Ohio, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Dakota, Utah, Washington, Wisconsin, Wyoming, Yukon, Argentina Northeast, Argentina Northwest, Argentina South, Bolivia, Chile Central, Chile North AlgeriaMoroccoAfghanistanAltayAmurBuryatiyaChina North-CentralChina South-CentralChitaInner MongoliaIranIraqIrkutskJapanKamchatkaKazakhstanKhabarovskKirgizstanKrasnoyarskMagadanManchuriaMongoliaNorth CaucasusPalestinePrimoryeQinghaiSakhalinTadzhikistanTibetTranscaucasusTürkiyeTurkmenistanTuvaUzbekistanWest SiberiaXinjiangYakutiyaEast HimalayaNepalPakistanWest HimalayaNew Zealand SouthAlbaniaAustriaBaltic StatesBelarusBelgiumBulgariaCentral European RussiaCzechia-SlovakiaDenmarkEast European RussiaFinlandFranceGermanyGreeceHungaryIcelandIrelandItalyKrymNetherlandsNorth European RussiaNorthwest European RussiaNorwayNW. Balkan Pen.PolandRomaniaSouth European RussiaSpainSwedenSwitzerlandUkraineAlaskaAlbertaArizonaBritish ColumbiaCaliforniaColoradoGreenlandIdahoIllinoisIndianaIowaLabradorMaineManitobaMichiganMinnesotaMontanaNebraskaNevadaNew BrunswickNew HampshireNew MexicoNew YorkNewfoundlandNorth DakotaNorthwest TerritoriesNova ScotiaNunavutOhioOntarioOregonPennsylvaniaPrince Edward I.QuébecSaskatchewanSouth DakotaUtahWashingtonWisconsinWyomingYukonArgentina NortheastArgentina NorthwestArgentina SouthBoliviaChile CentralChile North KoreaFøroyarRhode I.
Native distribution of Triglochin palustris, 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
Alaska ASK NORTHERN AMERICA
Alberta ABT
Aleutian Is. ALU
Arizona ARI
British Columbia BRC
California CAL
Colorado COL
Greenland GNL
Idaho IDA
Illinois ILL
Indiana INI
Iowa IOW
Labrador LAB
Maine MAI
Manitoba MAN
Michigan MIC
Minnesota MIN
Montana MNT
Nebraska NEB
Nevada NEV
New Brunswick NBR
New Hampshire NWH
New Mexico NWM
New York NWY
Newfoundland NFL
North Dakota NDA
Northwest Territories NWT
Nova Scotia NSC
Nunavut NUN
Ohio OHI
Ontario ONT
Oregon ORE
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
Saskatchewan SAS
South Dakota SDA
Utah UTA
Washington WAS
Wisconsin WIS
Wyoming WYO
Yukon YUK
Afghanistan AFG ASIA-TEMPERATE
Altay ALT
Amur AMU
Buryatiya BRY
China North-Central CHN
China South-Central CHC
Chita CTA
Inner Mongolia CHI
Iran IRN
Iraq IRQ
Irkutsk IRK
Japan JAP
Kamchatka KAM
Kazakhstan KAZ
Khabarovsk KHA
Kirgizstan KGZ
Korea KOR
Krasnoyarsk KRA
Kuril Is. KUR
Magadan MAG
Manchuria CHM
Mongolia MON
North Caucasus NCS
Palestine PAL
Primorye PRM
Qinghai CHQ
Sakhalin SAK
Tadzhikistan TZK
Tibet CHT
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Tuva TVA
Uzbekistan UZB
West Siberia WSB
Xinjiang CHX
Yakutiya YAK
Albania ALB EUROPE
Austria AUT
Baltic States BLT
Belarus BLR
Belgium BGM
Bulgaria BUL
Central European Russia RUC
Czechia-Slovakia CZE
Denmark DEN
East European Russia RUE
Finland FIN
Føroyar FOR
France FRA
Germany GER
Great Britain GRB
Greece GRC
Hungary HUN
Iceland ICE
Ireland IRE
Italy ITA
Krym KRY
Netherlands NET
North European Russia RUN
Northwest European Russia RUW
Norway NOR
NW. Balkan Pen. YUG
Poland POL
Romania ROM
South European Russia RUS
Spain SPA
Sweden SWE
Switzerland SWI
Ukraine UKR
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Argentina South AGS
Bolivia BOL
Chile Central CLC
Chile North CLN
East Himalaya EHM ASIA-TROPICAL
Nepal NEP
Pakistan PAK
West Himalaya WHM
Algeria ALG AFRICA
Morocco MOR
New Zealand South NZS AUSTRALASIA

Not drawn on the map: Kuril Is., Great Britain, Aleutian Is.. We hold no public-domain boundary for these regions, so they are listed rather than guessed at.

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 16 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.

  • Abbotia palustris (L.) Raf.
  • Juncago palustris (L.) Moench
  • Triglochin andina Phil.
  • Triglochin asiatica var. komarovii (Lipsch. & Pavlov) Tzvelev
  • Triglochin chilensis Meyen
  • Triglochin crassiculmis (Tzvelev) Prob.
  • Triglochin fonticola Phil.
  • Triglochin himalensis Royle
  • Triglochin juncea Gilib.
  • Triglochin komarovii Lipsch. & Pavlov
  • Triglochin palustris f. fernaldiana J.Rousseau
  • Triglochin palustris f. palustris
  • Triglochin palustris f. robustior Sennen
  • Triglochin palustris var. crassiculmis Tzvelev
  • Triglochin palustris var. salina Mert. & W.D.J.Koch
  • Tristemon palustris Raf.

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. Wikidata. common name (P1843), joined on the World Flora Online identifier (P7715). CC0. Retrieved 2026-07-13.
  4. 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.