Triglochin maritimaL.

Sea Arrowgrasssea arrowgrassseaside arrowgrass

WFO wfo-0000770185 Accepted WFO 2026-06 8 photographs CC0 / CC BY

Plate 1 figs. a–h · 8 separate observations

Triglochin maritima, photographed by Randal
fig. a Randal, CC0 1.0 / 2022-06-10 / obs. 205162573
Triglochin maritima, photographed by emma reader-lee
fig. b emma reader-lee, CC BY 4.0 / obs. 202590424
Triglochin maritima, photographed by Lucian Vazquez
fig. c Lucian Vazquez, CC BY 4.0 / obs. 169888022
Triglochin maritima, photographed by Susan Marley
fig. d Susan Marley, CC BY 4.0 / obs. 159441013
Triglochin maritima, photographed by agujaceratops
fig. e agujaceratops, CC BY 4.0 / obs. 157770122
Triglochin maritima, photographed by Mary Krieger
fig. f Mary Krieger, CC BY 4.0 / obs. 156912057
Triglochin maritima, photographed by Aleksei Baushev
fig. g Aleksei Baushev, CC BY 4.0 / obs. 147586397
Triglochin maritima, photographed by Thomas Gyselinck
fig. h Thomas Gyselinck, CC BY 4.0 / obs. 146163816

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 120 botanical countries

Regions where Triglochin maritima is native: Algeria, Tunisia, Afghanistan, Altay, Buryatiya, China North-Central, China South-Central, Chita, Inner Mongolia, Iran, Irkutsk, Japan, Kazakhstan, Khabarovsk, Kirgizstan, Korea, Krasnoyarsk, Kuril Is., Manchuria, Mongolia, North Caucasus, Primorye, Qinghai, Sakhalin, Tadzhikistan, Tibet, Transcaucasus, Türkiye, West Siberia, Xinjiang, Yakutiya, East Himalaya, Nepal, Pakistan, West Himalaya, Austria, Baltic States, Belarus, Belgium, Bulgaria, Central European Russia, Czechia-Slovakia, Denmark, East European Russia, Finland, Føroyar, France, Germany, Great Britain, Hungary, Iceland, Ireland, Italy, Krym, Netherlands, North European Russia, Northwest European Russia, Norway, NW. Balkan Pen., Poland, Portugal, Romania, South European Russia, Spain, Sweden, Ukraine, Alaska, Alberta, Arizona, British Columbia, California, Colorado, Connecticut, Idaho, Illinois, Indiana, Iowa, Kansas, Labrador, Maine, Manitoba, Massachusetts, Mexico Northeast, Mexico Northwest, Michigan, Minnesota, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, 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, Texas, Utah, Vermont, Washington, Wisconsin, Wyoming, Yukon, Argentina Northeast, Argentina Northwest, Argentina South, Bolivia, Chile Central AlgeriaTunisiaAfghanistanAltayBuryatiyaChina North-CentralChina South-CentralChitaInner MongoliaIranIrkutskJapanKazakhstanKhabarovskKirgizstanKrasnoyarskManchuriaMongoliaNorth CaucasusPrimoryeQinghaiSakhalinTadzhikistanTibetTranscaucasusTürkiyeWest SiberiaXinjiangYakutiyaEast HimalayaNepalPakistanWest HimalayaAustriaBaltic StatesBelarusBelgiumBulgariaCentral European RussiaCzechia-SlovakiaDenmarkEast European RussiaFinlandFranceGermanyHungaryIcelandIrelandItalyKrymNetherlandsNorth European RussiaNorthwest European RussiaNorwayNW. Balkan Pen.PolandPortugalRomaniaSouth European RussiaSpainSwedenUkraineAlaskaAlbertaArizonaBritish ColumbiaCaliforniaColoradoConnecticutIdahoIllinoisIndianaIowaKansasLabradorMaineManitobaMassachusettsMexico NortheastMexico NorthwestMichiganMinnesotaMontanaNebraskaNevadaNew BrunswickNew HampshireNew JerseyNew MexicoNew YorkNewfoundlandNorth DakotaNorthwest TerritoriesNova ScotiaNunavutOhioOntarioOregonPennsylvaniaPrince Edward I.QuébecSaskatchewanSouth DakotaTexasUtahVermontWashingtonWisconsinWyomingYukonArgentina NortheastArgentina NorthwestArgentina SouthBoliviaChile Central KoreaFøroyarRhode I.
Native distribution of Triglochin maritima, 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
Arizona ARI
British Columbia BRC
California CAL
Colorado COL
Connecticut CNT
Idaho IDA
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Labrador LAB
Maine MAI
Manitoba MAN
Massachusetts MAS
Mexico Northeast MXE
Mexico Northwest MXN
Michigan MIC
Minnesota MIN
Montana MNT
Nebraska NEB
Nevada NEV
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
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
Texas TEX
Utah UTA
Vermont VER
Washington WAS
Wisconsin WIS
Wyoming WYO
Yukon YUK
Austria AUT EUROPE
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
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
Portugal POR
Romania ROM
South European Russia RUS
Spain SPA
Sweden SWE
Ukraine UKR
Afghanistan AFG ASIA-TEMPERATE
Altay ALT
Buryatiya BRY
China North-Central CHN
China South-Central CHC
Chita CTA
Inner Mongolia CHI
Iran IRN
Irkutsk IRK
Japan JAP
Kazakhstan KAZ
Khabarovsk KHA
Kirgizstan KGZ
Korea KOR
Krasnoyarsk KRA
Kuril Is. KUR
Manchuria CHM
Mongolia MON
North Caucasus NCS
Primorye PRM
Qinghai CHQ
Sakhalin SAK
Tadzhikistan TZK
Tibet CHT
Transcaucasus TCS
Türkiye TUR
West Siberia WSB
Xinjiang CHX
Yakutiya YAK
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Argentina South AGS
Bolivia BOL
Chile Central CLC
East Himalaya EHM ASIA-TROPICAL
Nepal NEP
Pakistan PAK
West Himalaya WHM
Algeria ALG AFRICA
Tunisia TUN

Not drawn on the map: Kuril Is., Great Britain. 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 28 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.

  • Hexaglochin maritima (L.) Nieuwl.
  • Hexaglochin sexlocularis (Stokes) Nieuwl.
  • Juncago maritima (L.) Bubani
  • Triglochin ani K.Koch
  • Triglochin asiatica (Kitag.) Á.Löve & D.Löve
  • Triglochin concinna Burtt Davy
  • Triglochin concinna var. debilis (M.E.Jones) J.T.Howell
  • Triglochin concinna var. deserticola (Phil.) J.T.Howell
  • Triglochin debile Á.Löve & D.Löve
  • Triglochin debilis (M.E.Jones) Á.Löve & D.Löve
  • Triglochin elata Nutt.
  • Triglochin maritima f. exangularis Rchb.
  • Triglochin maritima f. maritima
  • Triglochin maritima f. multifissa Lepage
  • Triglochin maritima f. sexangularis Rchb.
  • Triglochin maritima subsp. asiatica Kitag.
  • Triglochin maritima var. altoandina Cabrera
  • Triglochin maritima var. asiatica (Kitag.) Ohwi
  • Triglochin maritima var. debilis M.E.Jones
  • Triglochin maritima var. deserticola Buchenau
  • Triglochin maritima var. deserticola Phil.
  • Triglochin maritima var. elata (Nutt.) A.Gray
  • Triglochin monanthos Speg.
  • Triglochin narbonensis Sennen

and 4 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. 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.