Vallisneria americana

Species:Vallisneria americana Michx.
Plant Notes:Vallisneria neotropicalis is here included as a synonym of V. americana (Lowden 1982). Whether or not the two are distinct is presently unclear as little is known of the geographic limits and morphological variation in the Americas. Populations of Vallisneria are concentrated in the Great Lakes region, Gulf Coast, and Pacific Northwest, with scattered occurrences between them. DNA sequences of ITS loci have shown they together form a monophyletic clade (Les et al. 2008). Within this clade, the four samples of northern V. americana (from Connecticut [2], Minnesota, and New Jersey) formed a strongly supported group sister to a weakly supported group composed of two samples of putative V. neotropicalis (from Florida and cultivation of unknown provenance) and an unidentified umbellate specimen from Texas (Les et al. 2008).
Status:Native, OBL (NWPL)
Specimen: View details of USF Herbarium specimens

** Not applicable or data not available.


Sub Class
Genus Vallisneria
Species Vallisneria americana Michx. - TAPEGRASS; AMERICAN EELGRASS


Citation VALLISNERIA AMERICANA Michaux, Fl. Bor.-Amer. 2: 220. 1803.
Basionym: **
Type: ILLINOIS (fide Fernald 1918): "fluminie Mississipi", without data, Michaux s.n. (lectotype: P). Lectotypified by Marie-Victorin, Contr. Inst. Bot. Univ. Montreal 46: 1-38. 1943.

** Not applicable or data not available.


CountyHerbariaLiterature Citation (If Applicable)
Alachua FLAS  
Bay FLAS  
Brevard USF  
Broward FSU  
Calhoun FSU  
Citrus USF  
Clay FLAS  
Collier USF  
Columbia FTG  
DeSoto FLAS  
Duval FLAS  
Franklin USF  
Gilchrist FLAS  
Glades FLAS  
Hendry FTG  
Hernando FLAS  
Hillsborough USF  
Jackson USF  
Jefferson FLAS  
Lake USF  
Lee GH  
Levy USF  
Marion USF  
Martin USF  
Miami-Dade USF  
Okeechobee USF  
Orange FLAS  
Palm Beach USF  
Pasco USF  
Pinellas USF  
Polk USF  
Putnam USF  
Santa Rosa FLAS  
Seminole USF  
Sumter USF  
Suwannee FLAS  
Volusia USF  
Wakulla USF  
Walton FLAS  


– Denotes synonyms that are applicable to the state. Show these synonyms only

SynonymFull CitationBasionymType
Vallisneria neotropicalis Vallisneria neotropicalis Victorin, Contr. Inst. Bot. Univ. Montreal 46: 34. 1943. TYPE: CUBA: Matanzas: Cienaga de Zapata, Río Negro, 24 Feb 1941, Victorin et al. 19552 (holotype: MT; isotypes: GH, NY).
Vallisneria spiralis var. americana Vallisneria spiralis Linnaeus, var. americana (Michaux) Torrey, Comp. Fl. N. Middle Stat. 365. 1826, basionym not directly cited, comb. inval.?.BASIONYM: Vallisneria americana Michaux 1803. 


Country State County Date Specimen Notes Image
USA Florida Marion Co. 13 Jan 1982 C. J. Dawes s.n.
USA Florida Marion Co. 08 Jul 1982 C. J. Dawes s.n.
USA Florida Marion Co. 08 Jul 1982 C. J. Dawes s.n.
USA Florida Martin Co. 19 Jan 2012 A. Wilkison s.n.
USA Florida Martin Co. 09 Jun 2011 A. Wilkison s.n.
USA Florida Levy Co. 07 Aug 1997 K. Gulledge 419
USA Florida Franklin Co. 29 Jun 1956 R. Kral 2721
USA Florida Hillsborough Co. 01 Nov 1964 C. J. Dawes s.n.
USA Florida Marion Co. 07 Jun 1983 C. J. Dawes s.n.
USA Florida Collier Co. 26 Sep 1964 O. K. Lakela 27450
USA Florida Collier Co. 06 Mar 1965 O. K. Lakela 28166 Cast on shore by waves.
USA Florida Palm Beach Co. 18 Oct 1987 D. Richardson s.n.
USA Florida Okeechobee Co. 25 Sep 1986 B. F. Hansen 11265
USA Florida Polk Co. 26 May 1962 O. K. Lakela 25103
USA Florida Jackson Co. 04 Sep 1979 S. B. Jones 23575
USA Florida Brevard Co. 23 Jun 1971 R. Hestand 22
USA Florida Volusia Co. 31 Dec 2005 J. M. Kunzer 1269
USA Florida Seminole Co. 16 Sep 1978 R. P. Wunderlin 6033
USA Florida Pasco Co. 02 Oct 1981 G. Robinson s.n.
USA Florida Marion Co. 04 May 1979 B. F. Hansen 5456
USA Florida Pinellas Co. 21 May 1988 K. Kuhlman s.n.
USA Florida Putnam Co. 08 Oct 1961 D. B. Ward 2811
USA Florida Wakulla Co. 20 Jun 1956 P. L. Redfearn s.n.
USA Florida Hillsborough Co. 29 Jun 1979 J. Boone 296
USA Florida Hillsborough Co. 26 Apr 1974 A.G. Shuey s.n.
USA Florida Sumter Co. 28 Jun 1984 R. P. Wunderlin 9772
USA Florida Lake Co. 01 May 1981 R. Daubenmire s.n.
USA Florida Citrus Co. 11 Apr 1958 G. R. Cooley 5907
USA Florida Citrus Co. 28 Apr 1958 G. R. Cooley 6054
USA Louisiana St. Tammany Par. 04 Oct 1978 J. G. Williamson 4020
USA North Carolina Tyrrell Co. 02 Oct 1966 A. E. Radford 45324
USA North Carolina Orange Co. 24 Feb 1956 E. Browne s.n.
USA Louisiana Cameron Par. 29 Sep 1963 J. W. Thieret 16414
USA Louisiana Cameron Par. 05 Aug 1983 D. D. Taylor 4462
USA North Carolina Currituck Co. 25 Jun 1958 H. E. Ahles 44488
USA Florida Miami-Dade Co. 11 Jul 1974 R. E. Mossman 1225(6)
USA Connecticut Tolland Co. 09 Aug 1993 S. R. Hill 25196
USA Vermont Windham Co. 14 Aug 1986 S. R. Hill 17051
USA Wisconsin Sawyer Co. 28 Aug 1962 H. H. Iltis 20610
USA Connecticut Litchfield Co. 28 Aug 1904 E. H. Eames 5089
USA Wisconsin Bayfield Co. 07 Jul 1979 Robbin C. Moran 842
USA Illinois Will Co. 24 Aug 2004 S. R. Hill 36092
USA Minnesota Morrison Co. 20 Aug 1949 R. B. Ledin s.n.
USA Ohio Erie Co. Jul 1905 O. E. Jennings s.n.
USA Texas Hays Co. 20 May 1962 D. S. Correll 25372
USA Wisconsin Sawyer Co. 06 Aug 1986 B. F. Hansen 11141
USA West Virginia Monongalia Co. 04 Aug 1954 H. D. Rohr s.n.
Canada Quebec Prov. 15 Aug 1931 Père Louis-Marie s.n.
USA Wisconsin Dane Co. 03 Aug 1932 H. M. Clarke s.n.
USA Wisconsin Marquette Co. 18 Sep 1929 F. A. Warren s.n.
USA Florida Hillsborough Co. 17 Jun 2021 S. Dickman 1648
USA Florida Polk Co. 08 Oct 1999 D. Gleckler 1
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