Stuckenia pectinata(L.) Börner

Fennel Pondweedsago pondweed

WFO wfo-0000771224 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Stuckenia pectinata, photographed by Grzegorz Grzejszczak
fig. a Grzegorz Grzejszczak, CC BY-SA 4.0 / 2022-06-07 / obs. 204612665
Stuckenia pectinata, photographed by Liubov Ilminska
fig. b Liubov Ilminska, CC0 1.0 / obs. 204049025
Stuckenia pectinata, photographed by Марина Садыкова
fig. c Марина Садыкова, CC BY 4.0 / obs. 203253924
Stuckenia pectinata, photographed by Марина Садыкова
fig. d Марина Садыкова, CC BY 4.0 / obs. 194725232
Stuckenia pectinata, photographed by WATANABE Hitoshi 渡辺仁
fig. e WATANABE Hitoshi 渡辺仁, CC BY 4.0 / obs. 190168811
Stuckenia pectinata, photographed by WATANABE Hitoshi 渡辺仁
fig. f WATANABE Hitoshi 渡辺仁, CC BY 4.0 / obs. 190160728
Stuckenia pectinata, photographed by Mahomed Desai
fig. g Mahomed Desai, CC BY 4.0 / obs. 164733516
Stuckenia pectinata, photographed by Allan Harris
fig. h Allan Harris, CC0 1.0 / obs. 161065558

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 211 botanical countries

Regions where Stuckenia pectinata is native: Algeria, Angola, Botswana, Burundi, Cape Provinces, Caprivi Strip, DR Congo, Egypt, Eritrea, Ethiopia, Free State, Kenya, KwaZulu-Natal, Libya, Madagascar, Malawi, Mauritania, Mauritius, Morocco, Mozambique, Namibia, Northern Provinces, Réunion, Rwanda, Socotra, Sudan-South Sudan, Tanzania, Tunisia, Uganda, Zambia, Zimbabwe, Afghanistan, Altay, Amur, Buryatiya, China North-Central, China South-Central, China Southeast, Chita, Cyprus, Gulf States, Hainan, Inner Mongolia, Iran, Iraq, Irkutsk, Japan, Kamchatka, Kazakhstan, Kirgizstan, Korea, Krasnoyarsk, Kuril Is., Lebanon-Syria, Magadan, Manchuria, Mongolia, Nansei-shoto, North Caucasus, Oman, Palestine, Primorye, Qinghai, Sakhalin, Saudi Arabia, Sinai, Tadzhikistan, Taiwan, Tibet, Transcaucasus, Türkiye, Turkmenistan, Tuva, Uzbekistan, West Siberia, Xinjiang, Yakutiya, Yemen, Assam, Bangladesh, India, Lesser Sunda Is., Myanmar, Nepal, Pakistan, Philippines, Solomon Is., Sri Lanka, Sulawesi, Sumatera, West Himalaya, New Zealand North, New Zealand South, Albania, Austria, Baleares, Baltic States, Belarus, Belgium, Bulgaria, Central European Russia, Corse, Czechia-Slovakia, Denmark, East European Russia, Finland, France, Germany, Great Britain, Greece, Hungary, Ireland, Italy, Kriti, Krym, Netherlands, North European Russia, Northwest European Russia, Norway, NW. Balkan Pen., Poland, Portugal, Romania, Sardegna, Sicilia, South European Russia, Spain, Sweden, Switzerland, Türkiye-in-Europe, Ukraine, Alabama, Alaska, Alberta, Aleutian Is., Arizona, Arkansas, British Columbia, California, Colorado, Connecticut, Florida, Idaho, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Missouri, Montana, Nebraska, Nevada, New Brunswick, New Hampshire, New Jersey, New Mexico, New York, Newfoundland, North Carolina, North Dakota, Northwest Territories, Nova Scotia, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Prince Edward I., Québec, Rhode I., Saskatchewan, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Wyoming, Yukon, New Caledonia, Vanuatu, Belize, Bolivia, Central American Pacific Is., Chile Central, Colombia, Cuba, Ecuador, El Salvador, Galápagos, Guatemala, Haiti, Panamá, Peru, Venezuela AlgeriaAngolaBotswanaBurundiCape ProvincesCaprivi StripDR CongoEgyptEritreaEthiopiaFree StateKenyaKwaZulu-NatalLibyaMadagascarMalawiMauritaniaMoroccoMozambiqueNamibiaNorthern ProvincesRwandaSudan-South SudanTanzaniaTunisiaUgandaZambiaZimbabweAfghanistanAltayAmurBuryatiyaChina North-CentralChina South-CentralChina SoutheastChitaCyprusGulf StatesHainanInner MongoliaIranIraqIrkutskJapanKamchatkaKazakhstanKirgizstanKrasnoyarskLebanon-SyriaMagadanManchuriaMongoliaNorth CaucasusOmanPalestinePrimoryeQinghaiSakhalinSaudi ArabiaSinaiTadzhikistanTaiwanTibetTranscaucasusTürkiyeTurkmenistanTuvaUzbekistanWest SiberiaXinjiangYakutiyaYemenAssamBangladeshIndiaLesser Sunda Is.MyanmarNepalPakistanPhilippinesSolomon Is.Sri LankaSulawesiSumateraWest HimalayaNew Zealand NorthNew Zealand SouthAlbaniaAustriaBaltic StatesBelarusBelgiumBulgariaCentral European RussiaCorseCzechia-SlovakiaDenmarkEast European RussiaFinlandFranceGermanyGreeceHungaryIrelandItalyKritiKrymNetherlandsNorth European RussiaNorthwest European RussiaNorwayNW. Balkan Pen.PolandPortugalRomaniaSiciliaSouth European RussiaSpainSwedenSwitzerlandTürkiye-in-EuropeUkraineAlabamaAlaskaAlbertaArizonaArkansasBritish ColumbiaCaliforniaColoradoConnecticutFloridaIdahoIllinoisIndianaIowaKansasKentuckyLouisianaMaineManitobaMarylandMassachusettsMexico CentralMexico GulfMexico NortheastMexico NorthwestMexico SoutheastMexico SouthwestMichiganMinnesotaMissouriMontanaNebraskaNevadaNew BrunswickNew HampshireNew JerseyNew MexicoNew YorkNewfoundlandNorth CarolinaNorth DakotaNorthwest TerritoriesNova ScotiaOhioOklahomaOntarioOregonPennsylvaniaPrince Edward I.QuébecSaskatchewanSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinWyomingYukonNew CaledoniaBelizeBoliviaCentral American Pacific Is.Chile CentralColombiaCubaEcuadorEl SalvadorGuatemalaHaitiPanamáPeruVenezuela MauritiusRéunionKoreaNansei-shotoBalearesSardegnaRhode I.VanuatuGalápagos
Native distribution of Stuckenia pectinata, 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
Alabama ALA NORTHERN AMERICA
Alaska ASK
Alberta ABT
Aleutian Is. ALU
Arizona ARI
Arkansas ARK
British Columbia BRC
California CAL
Colorado COL
Connecticut CNT
Florida FLA
Idaho IDA
Illinois ILL
Indiana INI
Iowa IOW
Kansas KAN
Kentucky KTY
Louisiana LOU
Maine MAI
Manitoba MAN
Maryland MRY
Massachusetts MAS
Mexico Central MXC
Mexico Gulf MXG
Mexico Northeast MXE
Mexico Northwest MXN
Mexico Southeast MXT
Mexico Southwest MXS
Michigan MIC
Minnesota MIN
Missouri MSO
Montana MNT
Nebraska NEB
Nevada NEV
New Brunswick NBR
New Hampshire NWH
New Jersey NWJ
New Mexico NWM
New York NWY
Newfoundland NFL
North Carolina NCA
North Dakota NDA
Northwest Territories NWT
Nova Scotia NSC
Ohio OHI
Oklahoma OKL
Ontario ONT
Oregon ORE
Pennsylvania PEN
Prince Edward I. PEI
Québec QUE
Rhode I. RHO
Saskatchewan SAS
South Dakota SDA
Tennessee TEN
Texas TEX
Utah UTA
Vermont VER
Virginia VRG
Washington WAS
West Virginia WVA
Wisconsin WIS
Wyoming WYO
Yukon YUK
Afghanistan AFG ASIA-TEMPERATE
Altay ALT
Amur AMU
Buryatiya BRY
China North-Central CHN
China South-Central CHC
China Southeast CHS
Chita CTA
Cyprus CYP
Gulf States GST
Hainan CHH
Inner Mongolia CHI
Iran IRN
Iraq IRQ
Irkutsk IRK
Japan JAP
Kamchatka KAM
Kazakhstan KAZ
Kirgizstan KGZ
Korea KOR
Krasnoyarsk KRA
Kuril Is. KUR
Lebanon-Syria LBS
Magadan MAG
Manchuria CHM
Mongolia MON
Nansei-shoto NNS
North Caucasus NCS
Oman OMA
Palestine PAL
Primorye PRM
Qinghai CHQ
Sakhalin SAK
Saudi Arabia SAU
Sinai SIN
Tadzhikistan TZK
Taiwan TAI
Tibet CHT
Transcaucasus TCS
Türkiye TUR
Turkmenistan TKM
Tuva TVA
Uzbekistan UZB
West Siberia WSB
Xinjiang CHX
Yakutiya YAK
Yemen YEM
Albania ALB EUROPE
Austria AUT
Baleares BAL
Baltic States BLT
Belarus BLR
Belgium BGM
Bulgaria BUL
Central European Russia RUC
Corse COR
Czechia-Slovakia CZE
Denmark DEN
East European Russia RUE
Finland FIN
France FRA
Germany GER
Great Britain GRB
Greece GRC
Hungary HUN
Ireland IRE
Italy ITA
Kriti KRI
Krym KRY
Netherlands NET
North European Russia RUN
Northwest European Russia RUW
Norway NOR
NW. Balkan Pen. YUG
Poland POL
Portugal POR
Romania ROM
Sardegna SAR
Sicilia SIC
South European Russia RUS
Spain SPA
Sweden SWE
Switzerland SWI
Türkiye-in-Europe TUE
Ukraine UKR
Algeria ALG AFRICA
Angola ANG
Botswana BOT
Burundi BUR
Cape Provinces CPP
Caprivi Strip CPV
DR Congo ZAI
Egypt EGY
Eritrea ERI
Ethiopia ETH
Free State OFS
Kenya KEN
KwaZulu-Natal NAT
Libya LBY
Madagascar MDG
Malawi MLW
Mauritania MTN
Mauritius MAU
Morocco MOR
Mozambique MOZ
Namibia NAM
Northern Provinces TVL
Réunion REU
Rwanda RWA
Socotra SOC
Sudan-South Sudan SUD
Tanzania TAN
Tunisia TUN
Uganda UGA
Zambia ZAM
Zimbabwe ZIM
Belize BLZ SOUTHERN AMERICA
Bolivia BOL
Central American Pacific Is. CPI
Chile Central CLC
Colombia CLM
Cuba CUB
Ecuador ECU
El Salvador ELS
Galápagos GAL
Guatemala GUA
Haiti HAI
Panamá PAN
Peru PER
Venezuela VEN
Assam ASS ASIA-TROPICAL
Bangladesh BAN
India IND
Lesser Sunda Is. LSI
Myanmar MYA
Nepal NEP
Pakistan PAK
Philippines PHI
Solomon Is. SOL
Sri Lanka SRL
Sulawesi SUL
Sumatera SUM
West Himalaya WHM
New Zealand North NZN AUSTRALASIA
New Zealand South NZS
New Caledonia NWC PACIFIC
Vanuatu VAN

Not drawn on the map: Socotra, 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 123 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.

  • Buccaferrea pectinata (L.) Bubani
  • Coleogeton pectinatus (L.) Les & R.R.Haynes
  • Potamogeton acifolius Ma
  • Potamogeton angustissimus Kunth
  • Potamogeton balatonicus (Gams) Soó
  • Potamogeton borealis Raf.
  • Potamogeton bracteatus Y.D.Chen
  • Potamogeton chakassiensis (Kaschina) Volobaev
  • Potamogeton chakassiensis var. tenuior Volobaev
  • Potamogeton columbianus Suksd.
  • Potamogeton diffusus (Hagstr.) Herter
  • Potamogeton drupaceus O.Lang
  • Potamogeton erhaiensis Y.D.Chen
  • Potamogeton exstipulatus Wolfg.
  • Potamogeton filicaulis Schur
  • Potamogeton filiformis subvar. helveticus (G.Fisch.) Asch. & Graebn.
  • Potamogeton filiformis var. borealis (Raf.) H.St.John
  • Potamogeton flabellatus Bab.
  • Potamogeton helveticus (G.Fisch.) W.Koch
  • Potamogeton helveticus var. balatonicus Gams
  • Potamogeton interruptus Kit. ex Schult.
  • Potamogeton interruptus var. diffusus Druce
  • Potamogeton interruptus var. ungulatus Druce
  • Potamogeton intramongolicus Ma

and 99 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.