Najas guadalupensis(Spreng.) Magnus

southern waternymph

WFO wfo-0000769498 Accepted WFO 2026-06 8 photographs CC0 / CC BY / CC BY-SA

Plate 1 figs. a–h · 8 separate observations

Najas guadalupensis, photographed by 葉子
fig. a 葉子, CC0 1.0 / 2022-04-04 / obs. 204390784
Najas guadalupensis, photographed by chiuluan
fig. b chiuluan, CC BY 4.0 / obs. 179387615
Najas guadalupensis, photographed by chiuluan
fig. c chiuluan, CC BY 4.0 / obs. 156449971
Najas guadalupensis, photographed by 葉子
fig. d 葉子, CC0 1.0 / obs. 167723684
Najas guadalupensis, photographed by Ryan Watson
fig. e Ryan Watson, CC BY 4.0 / obs. 52636864
Najas guadalupensis, photographed by Francisco Martínez González
fig. f Francisco Martínez González, CC BY-SA 4.0 / obs. 40868732
Najas guadalupensis, photographed by Summit Metro Parks
fig. g Summit Metro Parks, CC BY 4.0 / obs. 62367036
Najas guadalupensis, photographed by Brandon Corder
fig. h Brandon Corder, CC BY 4.0 / obs. 173844509

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 82 botanical countries

Regions where Najas guadalupensis is native: Alabama, Alberta, Arizona, Arkansas, California, Colorado, Connecticut, Delaware, District of Columbia, Florida, Georgia, Illinois, Indiana, Iowa, Kansas, Kentucky, Louisiana, Maine, Manitoba, Maryland, Massachusetts, Mexico Central, Mexico Gulf, Mexico Northeast, Mexico Northwest, Mexico Southeast, Mexico Southwest, Michigan, Minnesota, Mississippi, Missouri, Montana, Nebraska, Nevada, New Hampshire, New Jersey, New Mexico, New York, North Carolina, Ohio, Oklahoma, Ontario, Oregon, Pennsylvania, Québec, Rhode I., South Carolina, South Dakota, Tennessee, Texas, Utah, Vermont, Virginia, Washington, West Virginia, Wisconsin, Argentina Northeast, Argentina Northwest, Aruba, Bahamas, Bolivia, Brazil North, Colombia, Costa Rica, Cuba, Dominican Republic, Ecuador, El Salvador, Galápagos, Guatemala, Haiti, Honduras, Jamaica, Leeward Is., Netherlands Antilles, Nicaragua, Panamá, Peru, Puerto Rico, Uruguay, Venezuela, Venezuelan Antilles AlabamaAlbertaArizonaArkansasCaliforniaColoradoConnecticutFloridaGeorgiaIllinoisIndianaIowaKansasKentuckyLouisianaMaineManitobaMarylandMassachusettsMexico CentralMexico GulfMexico NortheastMexico NorthwestMexico SoutheastMexico SouthwestMichiganMinnesotaMississippiMissouriMontanaNebraskaNevadaNew HampshireNew JerseyNew MexicoNew YorkNorth CarolinaOhioOklahomaOntarioOregonPennsylvaniaQuébecSouth CarolinaSouth DakotaTennesseeTexasUtahVermontVirginiaWashingtonWest VirginiaWisconsinArgentina NortheastArgentina NorthwestBoliviaBrazil NorthColombiaCosta RicaCubaDominican RepublicEcuadorEl SalvadorGuatemalaHaitiHondurasJamaicaNicaraguaPanamáPeruPuerto RicoUruguayVenezuela DelawareDistrict of ColumbiaRhode I.ArubaBahamasGalápagosLeeward Is.Netherlands AntillesVenezuelan Antilles
Native distribution of Najas guadalupensis, 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
Alberta ABT
Arizona ARI
Arkansas ARK
California CAL
Colorado COL
Connecticut CNT
Delaware DEL
District of Columbia WDC
Florida FLA
Georgia GEO
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
Mississippi MSI
Missouri MSO
Montana MNT
Nebraska NEB
Nevada NEV
New Hampshire NWH
New Jersey NWJ
New Mexico NWM
New York NWY
North Carolina NCA
Ohio OHI
Oklahoma OKL
Ontario ONT
Oregon ORE
Pennsylvania PEN
Québec QUE
Rhode I. RHO
South Carolina SCA
South Dakota SDA
Tennessee TEN
Texas TEX
Utah UTA
Vermont VER
Virginia VRG
Washington WAS
West Virginia WVA
Wisconsin WIS
Argentina Northeast AGE SOUTHERN AMERICA
Argentina Northwest AGW
Aruba ARU
Bahamas BAH
Bolivia BOL
Brazil North BZN
Colombia CLM
Costa Rica COS
Cuba CUB
Dominican Republic DOM
Ecuador ECU
El Salvador ELS
Galápagos GAL
Guatemala GUA
Haiti HAI
Honduras HON
Jamaica JAM
Leeward Is. LEE
Netherlands Antilles NLA
Nicaragua NIC
Panamá PAN
Peru PER
Puerto Rico PUE
Uruguay URU
Venezuela VEN
Venezuelan Antilles VNA

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 20 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.

  • Caulinia guadalupensis Spreng.
  • Najas arcana Subils & Hunz.
  • Najas flexilis var. curassavica A.Braun
  • Najas flexilis var. fusiformis Chapm.
  • Najas flexilis var. gollmeriana A.Braun
  • Najas flexilis var. guadalupensis (Spreng.) A.Braun
  • Najas flexilis var. guadelupensis (Spreng.) A.Braun
  • Najas flexilis var. punctata A.Braun
  • Najas guadalupensis f. florida (R.R.Haynes & Wentz) Lowden
  • Najas guadalupensis f. floridana (R.R.Haynes & Wentz) Lowden
  • Najas guadalupensis var. curassavica (A.Braun) Urb.
  • Najas guadalupensis var. floridana R.R.Haynes & Wentz
  • Najas guadalupensis var. guadalupensis
  • Najas guadalupensis var. olivacea (Rosend. & Butters) R.R.Haynes
  • Najas microdon A.Braun
  • Najas microdon var. curassavica (A.Braun) A.Braun
  • Najas microdon var. guadalupensis (Spreng.) A.Braun
  • Najas olivacea Rosend. & Butters
  • Najas punctata (A.Braun) Rendle
  • Najas urbaniana O.Schmidt

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.