Paspalum fluitans

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Distribution Map: Based on vouchered plant specimens only. View county names by placing the mouse cursor over a particular county.

Species Distribution Map
Family:POACEAE
Species:Paspalum fluitans (Elliott) Kunth
Common Name:Water Crowngrass; Horse Tail Crowngrass
Habitat:**
Associated Ecological Communities:**
Growth Habit:Herb
Duration:Annual
Category:Vascular
USDA Symbol:**
Plant Notes:Water Crowngrass is a native herbaceous annual in the Grass family (Poaceae). It can be found throughout Alabama. Water Crowngrass grows in loosely rooted floating mats in ponds and lakes, on the banks of rivers and streams, and on sand bars or mud flats in areas of low water. Stems are submerged or decumbent and rooting at the nodes. The stems are green and glabrous. The leaves are alternate, linear to lanceolate in outline, with entire or ciliate margins. The leaves are rough to the touch and may have bulbous-based hairs near their base. The leaf sheaths of floating or submerged stems are inflated and pubescent, often with purple spots. The leaf sheaths of emersed stems are loose, pubescent, with erect ligules 1-3 mm in length. The ligule is a narrow strap-shaped membrane on the leaf sheath at its junction with the blade. Flowers are produced in terminal racemes of 20-50 branches in a “bottle-brush” arrangement. The rachis is foliaceous and covers the spikelets. Spikelets are pubescent and occur in two rows below the rachis. The spikelets are flat on one side and convex on the other. The entire rachis branch falls as one unit. The fruit is a whitish grain. Water Crowngrass is sometimes a nuisance, the floating mats blocking waterways and interfering with boating, fishing, or swimming.--A. Diamond
Taxonomic Notes:**
Status:Native, OBL (NWI)
References:**
Specimen: View specimen details in the Alabama Herbarium Consortium Specimen Database

** Not applicable or data not available.

Classification

FamilyPOACEAE - Grass family
Genus Paspalum
Species Paspalum fluitans (Elliott) Kunth - Water Crowngrass; Horse Tail Crowngrass

Citation

Citation Paspalum fluitans (Elliott) Kunth, Révis. Gramin. 1: 24. 1829.
Basionym: Ceresia fluitans Elliott 1816.
Type: **

** Not applicable or data not available.

Synonyms

SynonymFull CitationBasionymType
Axonopus repens Axonopus repens (P. J. Bergius) Torrend, Broteria 2: 119. 1933.Paspalum repens P. J. Bergius 1772. 
Ceresia fluitans Ceresia fluitans Elliott, Sketch Bot. S. Carolina 1: 109, pl. 6(4). 1816. GEORGIA
Cymatochloa fluitans Cymatochloa fluitans (Elliott) Schlechtendal, Bot. Zeitung (Berlin) 12: 822. 1854.Ceresia fluitans Elliott 1816. 
Cymatochloa repens Cymatochloa repens (P. J. Bergius) Schlechtendal, Bot. Zeitung (Berlin) 12: 822. 1854.Paspalum repens P. J. Bergius 1772. 
Paspalum bistipulatum Paspalum bistipulatum Hochstetter ex Steudel, Syn. Pl. Glumac. 1: 29. 1853. SURINAM: Without data, Hostmann 707A (holotype: P; isotype: L, LE, MO, US(fragm)).
Paspalum frankii Paspalum frankii Steudel, Syn. Pl. Glumac. 1: 19. 1853. LOUISIANA: Orleans Par.: New Orleans, 1837, Frank s.n. (holotype; P; isotypes: MO, NY, US(fragm)).
Paspalum gracile Paspalum gracile Rudge, Pl. Guian. 20, t. 26. 1805. GUYANA: Without data, Martin s.n. (lectotype: BM; isolectotype: US(fragm)). Lectotypified by Judziewicz, in Goerts-van Rijn, Fl. Guianas, Ser. A. 187: 507. 1990.
Paspalum mucronatum Paspalum mucronatum Muhlenberg, Descr. Gram. 96. 1817. "Mississipppi, et in Georgia", without data, Muhlenberg 95 (holotype: PH; isotype: US(fragm)).
Paspalum natans Paspalum natans Leconte, J. Phys. Chim. Hist. Nat. Arts 91: 285. 1820. GEORGIA: Without data, Leconte s.n. (holotype: P?).
Paspalum pyramidale Paspalum pyramidale Nees von Esenbeck, in Martius, Fl. Bras. Enum. Pl. 2: 77. 1829. BRAZIL: Pará: Isla Marajó, Rio Amazonas, Apr, Martius s.n. (holotype: M; isotype: US(fragm)).
Paspalum repens var. fluitans Paspalum repens P. J. Bergius, var. fluitans (Elliott) Wipff & S. D. Jones, Phytologia 77: 461. 1995 ("1994")..Ceresia fluitans Elliott 1816. 
Paspalum repens Paspalum repens P. J. Bergius, Acta Helv. Phys.-Math. 7: 129, pl. 7. 1772. SURINAM: Without data (lectotype: P. J. Bergius, Acta Helv. Phys.-Math. 7: pl. 7. 1772). Lectotypified by Renvoize, Gram. Bolivia 111. 1998.

Specimens and Distribution

This species has been reported in the following counties by the herbaria listed. An overview of the individual specimens are provided in the table that follows. Click on the accession number to view details; click on column headers to sort; choose a county or herbaria to filter the specimen data.

Counties included on distribution map: Autauga, Baldwin, Bibb, Blount, Bullock, Butler, Choctaw, Clarke, Crenshaw, Dallas, Greene, Jackson, Jefferson, Lawrence, Limestone, Mobile, Montgomery, Shelby, Tuscaloosa, Wilcox

Counties represented by specimen data listed below:

Herbaria represented by specimen data listed below: ALNHS, AUA, JSU, SAMF, TROY, UNA, USAM, UWAL

Range of years during which specimens were collected: 1977 - 1993

Barcode / Accession No. County Coll. Date Collector &
Collection No.		 Herbarium &
Herbarium Name Used		 Image
JSU100387 Jefferson 23 Sep 2000 Spaulding, Daniel D.
10920		 JSU
Paspalum fluitans (Elliott) Kunth
USAM000012407 Baldwin 15 Nov 1980 LeLong, Michel G.
11882		 USAM
Paspalum repens P. J. Bergius
UWAL0052876 Bibb 18 Aug 2019 Keener, Brian R.
11541		 UWAL
Paspalum fluitans (Elliott) Kunth
JSU100386 Jefferson 15 Aug 1984 Barber, J. Patrick
942		 JSU
Paspalum fluitans (Elliott) Kunth
UWAL0036020 Blount 24 Aug 2015 Anderson, Kelly
912		 UWAL
Paspalum fluitans P.J.Bergius
USAM000012404 Baldwin 15 Nov 1980 LeLong, Michel G.
11882		 USAM
Paspalum repens P. J. Bergius
JSU100389 Shelby 11 Oct 1997 Spaulding, Daniel D.
10139		 JSU
Paspalum fluitans (Elliott) Kunth
UNA00056451 Tuscaloosa 07 Oct 1908 Harper, Roland M.
116		 UNA
Paspalum fluitans (Ell.) Kunth
USAM000012342 Mobile 01 Nov 1980 LeLong, Michel G.
11838		 USAM
Paspalum fluitans (Elliott) Kunth
AUA000040261 Montgomery 28 Sep 2019 Birkhead, Roger
 AUA
Paspalum Fluitans (Ell.) Kunth
UWAL0019342 Limestone 24 Aug 1991 Kral, Robert
79603		 UWAL
Paspalum repens Berg.
UWAL0049632 Jackson 11 Sep 2019 Webb, David H.
8762		 UWAL
Paspalum repens P.J. Berguis
TROY000050435 Greene 09 Sep 2018 Keener, Brian R.
10871		 TROY
Paspalum fluitans (Elliott) Kunth
JSU100471 Clarke 13 Sep 1997 Whetstone, R. David
18870		 JSU
Paspalum repens
USAM000012341 Mobile 01 Nov 1980 LeLong, Michel G.
11838		 USAM
Paspalum fluitans (Elliott) Kunth
TROY000012462 Crenshaw 30 Sep 1999 Diamond, Alvin R.
11614		 TROY
Paspalum fluitans (Elliott) Kunth
AUA000037500 Montgomery 8 Sep 2016 Barger, T. Wayne
SP#2493		 AUA
Paspalum Repens Berg.
JSU100388 Shelby 23 Sep 2000 Spaulding, Daniel D.
10930		 JSU
Paspalum fluitans (Elliott) Kunth
USAM000012408 Baldwin 15 Nov 1980 LeLong, Michel G.
11882		 USAM
Paspalum repens P. J. Bergius
USAM000012343 Wilcox 27 Sep 1978 Haynes, Robert R.
6965		 USAM
Paspalum fluitans (Elliott) Kunth
TROY000027513 Jefferson 15 Aug 1984 Barber, J. Patrick
942		 TROY
Paspalum fluitans (Elliott) Kunth
UNA00022789 Dallas 15 Oct 1993 Haynes, Chris G.
s.n.		 UNA
Paspalum repens Berg.
ALNHS00004560 Montgomery 08 Sep 2016 Barger, T. Wayne
SP#2493		 ALNHS
Paspalum fluitans (Elliot) Kunth
UNA00005599 Shelby 24 Sep 1978 Haynes, Robert R.
6928		 UNA
Paspalum fluitans (Ell.) Kunth
UWAL0009081 Montgomery 29 Sep 2009 Diamond, Alvin R.
20598		 UWAL
Paspalum repens Berg.
UNA00005584 Autauga 24 Sep 1977 Davenport, Lawrence J.
170		 UNA
Paspalum fluitans (Ell.) Kunth
AUA000018422 Dallas 8 Sep 1976 Sessler, Ann H.
550		 AUA
Paspalum Fluitans (Ell.) Kunth
USAM000012410 Baldwin 01 Nov 1980 LeLong, Michel G.
11826		 USAM
Paspalum repens P. J. Bergius
TROY000027512 Jefferson 29 Sep 2005 Diamond, Alvin R.
15837		 TROY
Paspalum fluitans (Elliott) Kunth
TROY000027511 Blount 07 Sep 2002 Kral, Robert
93193		 TROY
Paspalum fluitans (Elliott) Kunth
JSU100385 Baldwin 27 Aug 2000 Spaulding, Daniel D.
10835		 JSU
Paspalum fluitans (Elliott) Kunth
USAM000012409 Baldwin 15 Nov 1980 LeLong, Michel G.
11882		 USAM
Paspalum repens P. J. Bergius
UWAL0013801 Bullock 28 Sep 2012 Dykes, Bailee
1344		 UWAL
Paspalum repens Bergius
USAM000012405 Baldwin 01 Nov 1980 LeLong, Michel G.
11826		 USAM
Paspalum repens P. J. Bergius
TROY000048073 Lawrence 02 Oct 1993 Blythe, Fennel
13		 TROY
Paspalum fluitans (Elliott) Kunth
TROY000012461 Clarke 01 Oct 2006 Diamond, Alvin R.
16984		 TROY
Paspalum fluitans (Elliott) Kunth
USAM000012406 Baldwin 15 Nov 1980 LeLong, Michel G.
11882		 USAM
Paspalum repens P. J. Bergius
TROY000012460 Butler 08 Oct 2007 Diamond, Alvin R.
18501		 TROY
Paspalum fluitans (Elliott) Kunth
TROY000036720 Bullock 28 Sep 2012 Dykes, Bailee
1344		 TROY
Paspalum repens Bergius
AUA000018401 Choctaw 13 Sep 1995 Crouch, Virginia E.
1487		 AUA
Paspalum Fluitans (Ell.) Kunth
AUA000018421 Crenshaw 30 Sep 1999 Diamond, Alvin R.
11614		 AUA
Paspalum Fluitans (Ell.) Kunth
UWAL0009077 Butler 08 Oct 2007 Diamond, Alvin R.
18501		 UWAL
Paspalum fluitans (Ell.) Kunth
UNA00005574 Wilcox 27 Sep 1978 Haynes, Robert R.
6965		 UNA
Paspalum fluitans (Ell.) Kunth
UWAL0046866 Limestone 10 Oct 2019 Webb, David H.
8837		 UWAL
Paspalum repens P.J. Berguis
UNA00005594 Dallas 24 Sep 1977 Davenport, Lawrence J.
180		 UNA
Paspalum fluitans (Ell.) Kunth
UWAL0047385 Greene 09 Sep 2018 Keener, Brian R.
10871		 UWAL
Paspalum fluitans (Elliott) Kunth
USAM000012340 Mobile 01 Nov 1980 LeLong, Michel G.
11838		 USAM
Paspalum fluitans (Elliott) Kunth
TROY000029420 Montgomery 29 Sep 2009 Diamond, Alvin R.
20958		 TROY
Paspalum fluitans (Elliott) Kunth
SAMF0001328 Shelby 13 Sep 1988 Davenport, Lawrence J.
2593		 SAMF
Paspalum repens Bergius var. fluitans (Elliott) J. Wipff & S. D. Jones
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