Herbarium Specimen Details

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Collier Co. : North Naples. 26° 8' 31" N 81° 47' 41" W
Habitat Lake shore.
Reproductive State
Collector O. K. Lakela 30659
Collection Date 04 Mar 1967
Accession Number 79688
Image 79688.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Monroe Co. : Pinecrest Road. 25° 43' 60" N 80° 55' 60" W
Habitat 18 in. of water.
Reproductive State
Collector G. R. Cooley 900
Collection Date 07 Apr 1952
Accession Number 2119
Image 2119.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: E. West,
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Collier Co. : Tamiami Trail, bridge #98. 25° 45' 31" N 80° 23' 54" W
Reproductive State
Collector W. G. Atwater
Collection Date 11 May 1958
Accession Number 20057
Image 20057.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Citrus Co. : Homosassa River. 28° 46' 53" N 82° 36' 54" W
Habitat In fresh water of river.
Reproductive State
Collector G. R. Cooley 5905
with J.H. Davis
Collection Date 11 Apr 1958
Accession Number 2121
Image 2121.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: R. K. Godfrey,
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Wakulla Co. : St. Marks River ca. 1 mi. S of Newport. 30° 10' 60" N 84° 10' 0" W
Habitat In fairly deep water amongst Sagittaria subulata var. kurziana [S. kurziana] and Potamogeton perfoliatus var. buphleuroides [P. perfoliatus]; in flowing cool water of river.
Reproductive State
Collector R. K. Godfrey 54358
Collection Date 17 Feb 1956
Accession Number 2122
Image 2122.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum echinatum A. Gray - Determined By: Kral,
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Hernando Co. : In Weeki Wachee River, 1 mi. S of Springs.
Habitat Submersed in river.
Reproductive State
Collector R. Kral 7088
with M. Kral
Collection Date 27 Jun 1958
Accession Number 2588
Image 2588.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Palm Beach Co. : Palm Beach Junior College. 2 mi. W of Lake Worth. 27° 56' 21" N 82° 23' 52" W
Description Growing completely submerged in shallow water.
Habitat Wet prairie, altered with white sand and sandy loam fill.
Reproductive State
Collector W. L. McCart 9432
Collection Date 18 Dec 1967
Accession Number 90494
Image 90494.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: R. K. Godfrey,
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Bay Co. : Econfina Creek W of Youngstown. 30° 21' 0" N 85° 25' 60" W
Description Abundant in long festoons.
Habitat In deep, clear water.
Reproductive State
Collector R. K. Godfrey 72282
with R.F. Doren
Collection Date 10 Dec 1972
Accession Number 105555
Image 105555.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Miami-Dade Co. : Black Creek, upstream from the bridge, on the way to Homestead. 25° 28' 7" N 80° 28' 39" W
Description Abundant.
Habitat In blanket of algae, with Lemna, Wolffia and Salvinia.
Reproductive State
Collector O. K. Lakela 27321
Collection Date 20 Jul 1964
Accession Number 60673
Image 60673.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Monroe Co. : Pinecrest Road. [Former FL] 94, SE of Monroe Station. 25° 44' 48" N 80° 56' 22" W
Habitat Cypress [Taxodium] ponds, intervening glades, pinelands, creeks and ditches. Persea, Myrica, Annona, Ficus.
Reproductive State
Collector O. K. Lakela 29921
with J. DeBoer
Collection Date 28 May 1966
Accession Number 74583
Image 74583.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Hillsborough Co. : Upper reaches of the Little Manatee River. 27° 28' 60" N 82° 10' 60" W
Description Rare.
Habitat Intermixed with Hydrilla and Potamogeton.
Reproductive State
Collector A.G. Shuey
Collection Date 03 May 1974
Accession Number 116785
Image 116785.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. Florida , Hernando Co. : Weeki Wachee River.
Reproductive State
Collector G. R. Cooley 6020
Collection Date 25 Apr 1958
Accession Number 2120
Image 2120.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Locality USA. Florida , Brevard Co. : North Merritt Island.
Habitat In ditch along road.
Reproductive State
Collector J. E. Poppleton
with A.G. Shuey
Collection Date 17 Aug 1972
Accession Number 124688
Image 124688.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: B. F. Hansen, 1996
Determination History
Myriophyllum aquaticum (Vell.) Verdc.
Locality USA. Florida , Pinellas Co. : Lake Tarpon. 28° 1' 60" N 82° 34' 0" W
Description DNR research voucher specimen.
Habitat Shoreline.
Reproductive State
Collector K. Kuhlman
with A. Lazar
Collection Date 21 May 1988
Accession Number 214579
Image 214579.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: B. F. Hansen, Nov 2005
Determination History
Ceratophyllum echinatum A. Gray
Locality USA. Florida , Manatee Co. : Wingate Creek State Park. In Johnson Creek. T35S, R22E, Sec. 6, NE¼ of SE¼ of SW¼. 28° 7' 60" N 81° 28' 0" W
Habitat Blackwater stream.
Reproductive State
Collector C. Becker
with A. Emmert
Collection Date 01 Aug 2005
Accession Number 243415
Image 243415.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Wunderlin, 1988
Determination History
Ceratophyllum echinatum A. Gray
Locality USA. Florida , Lake Co. : 2 mi. N of Mount Plymouth. 28° 40' 60" N 81° 31' 60" W
Reproductive State
Collector R. F. Daubenmire
with J. Daubenmire
Collection Date 31 May 1984
Accession Number 191465
Image 191465.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Lake Co. : Lake Harris. 30° 23' 60" N 86° 43' 60" W
Reproductive State Immature Fruit
Collector R. F. Daubenmire
with J. Daubenmire
Collection Date 25 Oct 1986
Accession Number 193790
Image 193790.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Collier Co. : Along US 41, ca. 0.5 mi. W of Indian Village and 5.3 mi. W of Miami-Dade County line. 25° 37' 0" N 80° 31' 60" W
Description Abundant.
Habitat In canal.
Reproductive State
Collector J. H. Wiersema 1995
Collection Date 25 Jul 1980
Accession Number 169830
Image 169830.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Volusia Co. : South Daytona. In ditch along the N side of Aspen Drive, ca. 250 m W of the junction of Magnolia Avenue and Aspen Drive; ca. 3.5 mi. ENE of the junction of I-95 and I-4. 30° 0' 0" N 81° 40' 60" W
Description Submerged aquatic rooted in muddy, calcareous substrate.
Habitat At a depth of ca. 5 dm in ditch draining a ca. 8 ac. stormwater management pond.
Reproductive State
Collector J. M. Kunzer 1270
Collection Date 31 Dec 2005
Accession Number 242061
Image 242061.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Alachua Co. : Paynes Prairie Preserve State Park. S of Gainesville. Alachua Lake, 1 mi. S of Alachua Sink. SE of lake outlet (canal). T10S, R20E, Sec. 27, W½. 29° 39' 5" N 82° 19' 30" W
Habitat Submerged in water 1-2 m deep.
Reproductive State
Collector J. C. Easterday 826
Collection Date 22 Mar 1982
Accession Number 170118
Image 170118.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Hillsborough Co. : Little Manatee River State Park. N loop of N hiking trail; under footbridge at Cypress Creek. T32S, R19E, Sec. 25, NW¼ of NW¼. 27° 28' 60" N 82° 10' 60" W
Description Aquatic to 0.3 m long (tangled on log).
Habitat Blackwater stream.
Reproductive State Fertile
Collector J. Myers 316
Collection Date 20 Mar 1999
Accession Number 230060
Image 230060.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Sumter Co. : RI-LA-CA marina, Lake Panasoffkee, ca. 0.5 mi. E of FL 470 on C-439, ca. 0.5 mi. S of Panacoochee Retreats, near boat dock. T19S, R22E, Sec. 33. 28° 45' 0" N 82° 4' 60" W
Reproductive State
Collector R. P. Wunderlin 9785
with B.F. Hansen, G. Robinson
Collection Date 28 Jun 1984
Accession Number 179422
Image 179422.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Pinellas Co. : Lake Tarpon. Anderson Park. 28° 1' 60" N 82° 34' 0" W
Description Submerged.
Reproductive State
Collector G. Fleming 3708
Collection Date 23 Aug 1984
Accession Number 179013
Image 179013.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Hardee Co. : Ca. 0.7 mi. WNW of Ona. T34S, R24E, Sec. 29, SE¼ of SE¼. 27° 28' 0" N 81° 55' 0" W
Habitat Small, shaded canal between larger wetlands.
Reproductive State
Collector B. F. Hansen 12986
Collection Date 18 Nov 2003
Accession Number 240339
Image 240339.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Okeechobee Co. : Lake Okeechobee public access point at Nubbin Slough, ca. 4.5 mi. (s.l.d.) SE of Okeechobee. T38S, R36E, Sec. 6, NW¼ of SE¼. 27° 14' 38" N 80° 49' 47" W
Habitat In shallow water along lake shore.
Reproductive State
Collector B. F. Hansen 11281
with R.P. Wunderlin, K. Kuhlman
Collection Date 25 Sep 1986
Accession Number 191578
Image 191578.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Volusia Co. : Tomoka State Park. Johns Island; ca. 1 km E of the US 1 bridge at the Tomoka River, ca. 1 km NNE of the N terminus of Nova Road (C-5A). 29° 18' 3" N 81° 5' 13" W
Habitat At culvert opening of ditch through brackish marsh.
Reproductive State
Collector J. M. Kunzer 1441
Collection Date 15 Mar 2006
Accession Number 253483
Image 253483.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Duval Co. : Sawmill Slough Preserve. University of North Florida; Lake Oneida. 30° 16' 1" N 81° 31' 30" W
Description Submerged and free-floating; sepals olive green, lacking spines.
Habitat With Utricularia radiata and Nitella sp.
Reproductive State
Elevation 32 to ft
Collector G. Alvarez 1
with C. Hubbuch
Collection Date 03 Jun 2013
Accession Number 280716
Image 280716.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nelumbonaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Locality USA. Louisiana , Lafourche Par. : Adjacent to Bayou Lafourche, 3 mi. S of Thibodeux on Highway 1.
Habitat Drainage canal.
Reproductive State
Collector M. Alleman
Collection Date 09 Sep 1978
Accession Number 142357
Image 142357.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nelumbonaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Louisiana , Claiborne Par. : Corney Lake Recreation Area, Kitsatchie National Forest, NE of Summerfield. T23N, R4W, Sec. 11.
Reproductive State
Collector D. D. Taylor
with D. C. Moore
Collection Date 23 Jul 1983
Accession Number 217606
Image 217606.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nelumbonaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: Radford,
Ceratophyllum demersum L. - Determined By: J. R. Massey, 1980
Locality USA. South Carolina , Allendale Co. : Tuten's Mill Pond on US 321 S of Sycamore.
Habitat Roadside and pond margin.
Reproductive State
Collector C. R. Bell
Collection Date 10 Oct 1956
Accession Number 20118
Image 20118.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nelumbonaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Locality USA. Louisiana , Ouachita Par. : Fourth Lake, Black Bayou, N of Monroe.
Reproductive State
Collector R. D. Thomas
Collection Date 10 Jun 1971
Accession Number 115528
Image 115528.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nelumbonaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum echinatum A. Gray
Ceratophyllum muricatum Cham. - Determined By: J. R. Massey, May 1981
Locality USA. North Carolina , Wayne Co. : Near NC 102, 3.5 mi. NW of Dudley.
Habitat Pool.
Reproductive State
Collector A. E. Radford
Collection Date 28 Aug 1957
Accession Number 20117
Image 20117.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nelumbonaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. South Carolina , Clarendon Co. : Elliotts Flatts, 0.5 mi. S of Tudie Cut, Lake Marion.
Description Submersed, rooted in 2.5 ft. of water.
Habitat Mixed with Egeria densa.
Reproductive State
Collector C. A. Aulbach-Smith
with J. Pickett, P. Mancusi-Ungaro
Collection Date 23 Sep 1983
Accession Number 197549
Image 197549.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nymphaeaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: Fosberg,
Locality Mexico. Baja California Descanso river, Northern Baja California. 31° 51' 4" N 116° 35' 22" W
Habitat Submerged in fresh water.
Reproductive State
Elevation 1 to m
Collector F. R. Fosberg
Collection Date 05 Sep 1931
Accession Number 128496
Image 128496.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nymphaeaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L.
Locality Mexico. Tamaulipas Along highway 85 just S of Cuidad Mante, 0.8 mi. S of junction of highways 85 and 80. 22° 48' 14" N 98° 56' 56" W
Description Abundant.
Habitat In irrigation canal.
Reproductive State
Collector J. H. Wiersema
Collection Date 03 Jan 1980
Accession Number 152042
Image 152042.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nymphaeaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: Liesner, 1977
Locality Panama. Canal Zone Prov. Vicinity of pistol range, 1.5 km SE of Pedro Miguel; in zone ca. 10 m wide at edge of Caimitillo Arm, a bay of Miraflores Lake. 8° 59' 49" N 79° 35' 31" W
Reproductive State
Elevation 15 to m
Collector M. Nee
Collection Date 28 Feb 1974
Accession Number 134036
Image 134036.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nymphaeaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: J. A. Lagos,
Locality El Salvador. San Miguel Dept. La Laguna del Jocotal. 13° 52' 0" N 87° 57' 0" W
Habitat Sumergida en el agua.
Reproductive State
Elevation 80 to m
Collector J. A. Lagos
Collection Date 03 Dec 1957
Accession Number 1768
Image 1768.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nymphaeaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Determination History
Ceratophyllum demersum L. - Determined By: H. Y. Mohan Ram,
Locality India. Delhi Najafgarh. 28° 36' 33" N 76° 58' 47" E
Description A slender, submerged, rootless, much-branched aquatic.
Habitat Rainfall 20-25 in.
Reproductive State
Elevation 680 to ft
Collector R. K. Tandon
Collection Date Oct 1961
Accession Number 46809
Image 46809.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Nymphaeaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality Sweden. Skane Co. Sh. Landshrona.
Reproductive State
Collector E. Nordström
Collection Date 20 Sep 1893
Accession Number 215904
Image 215904.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Monroe Co. : Along N side of Loop Road (FL 94), 5.9 mi. S of Monroe Station and the US 41 junction. 25° 19' 60" N 81° 0' 0" W
Description Abundant.
Habitat In slightly shaded canal ca. 3 ft. deep, in area of cypress [Taxodium] trees.
Reproductive State
Collector R. E. Mossman
Collection Date 10 Feb 1974
Accession Number 298274
Image 298274.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Oklahoma , McCurtain Co. : R26E, T7S, Sec. 1, SW ¼; banks and water of Forked Lake on Weyerhaeuser Col Road #10450, ca. 5.6 mi/ S of Eagletown post office. 34° 1' 60" N 94° 34' 0" W
Habitat Taxodium swamp with heavy bloom of Spirodela; banks heavily wooded with Pinus taeda, Quercus phellos, Q. nigra, Carya tomentosa, and Liquidambar; water saturated sand; numerous tall trees to 25 m. tall; numerous seedlings in mud at edge of water.
Reproductive State
Collector R. J. Tyrl
Collection Date 27 Jun 1976
Accession Number 197472
Image 197472.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Illinois , McHenry Co. : T46N, R8E, SE ¼ NW ¼ Sect. 10; Margin of Richmond Hunting Club property, N side of crossing of IL 173 over tributary of Nippersink Creek, 1.4 km. ENE of Richmond; coordinate datum: WGS84/NAD83; Richmond 7.5' quadrangle. 42° 28' 48" N 88° 17' 21" W
Description Common submerged aquatic herb.
Habitat Aquatic at margin of polled creek with Myriophyllum, Lemna, Elodea, Potamogeton, Utricularia.
Reproductive State
Elevation 800 to ft
Collector S. R. Hill
Collection Date 07 Jul 2011
Accession Number 268006
Image 268006.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: S. R. Hill, October 1995
Locality USA. Illinois , Cass Co. : Beardstown 7.5' quad.; long borrow pit, first road to E, S of bridge; T18N, R12W, NE ¼, NE ¼ Section 21; Illinois river floodplain. 40° 1' 11" N 90° 26' 8" W
Habitat River floodplain; locally frequent in shallow water with Myriophyllum.
Reproductive State
Collector S. R. Hill
Collection Date 12 Sep 1995
Accession Number 216089
Image 216089.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Locality USA. Oklahoma , Payne Co. : Near pond margin, 7 mi. S and 1 mi. W of Stillwater. 36° 6' 3" N 97° 3' 40" W
Habitat Submerged near pond margin.
Reproductive State
Collector N. A. Anderson
Collection Date 14 Sep 1962
Accession Number 53262
Image 53262.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: Les, 1986
Locality USA. Iowa , Poweshiek Co. : Small pond just SW of Arbor Lake, Grinnell. 41° 44' 35" N 92° 43' 21" W
Habitat Abundant in small pond.
Reproductive State
Collector N. H. Russell
Collection Date 27 Jul 1952
Accession Number 10677
Image 10677.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L. - Determined By: S. R. Hill, 2005
Locality USA. Illinois , Kendall Co. : In polls of Big Rock Creek, N of Hennig Road, between Rock Creek Road and the creek. 41° 41' 48" N 88° 30' 51" W
Habitat Occasional submerged aquatic herb in ponded areas of creek; plano; clear shallow water over glacial cobbles and gravel; some history of excavation.
Reproductive State
Elevation 192 to m
Collector S. R. Hill
Collection Date 01 Sep 2005
Accession Number 267580
Image 267580.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Oklahoma , Roger Mills Co. : R24W, T15N, Sec. 26; 9 mi. N of Cheyenne US 283; Dead Indian Creek Lake USCS #4. 35° 36' 50" N 99° 40' 17" W
Habitat Associated species: Potamogeton nodosus.
Reproductive State
Collector R. W. Couch
with Nelson, E.
Collection Date 28 Jul 1979
Accession Number 192768
Image 192768.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. New York Outlet of river, Mastic. 40° 48' 7" N 72° 50' 27" W
Habitat Near outlet of river.
Reproductive State
Collector L. Griscom
Collection Date 28 Jun 1919
Accession Number 29424
Image 29424.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Vermont , Chittenden Co. : La Platte River.
Habitat River.
Reproductive State
Collector C. H. Knowlton
Collection Date 13 Aug 1922
Accession Number 22026
Image 22026.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Oregon , Lane Co. : In Woahink Lake, near US 101.
Description Staminate flowers deep red.
Habitat In lake.
Reproductive State
Collector A. N. Steward
with Bratz and Hanson.
Collection Date 01 Jun 1953
Accession Number 71673
Image 71673.JPG
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Hillsborough Co. : Alafia River State Park. Pollard Branch, at its junction with Alafia River. 27° 51' 0" N 82° 7' 60" W
Habitat Blackwater stream.
Reproductive State
Collector R. Rowe
Collection Date 04 Jun 2013
Accession Number 300691
Image 300691.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida St. Marks [National] Wildlife Refuge. St. Marks River; Zone 7.
Reproductive State
Collector C. M. Owsley
Collection Date 30 Sep 1987
Accession Number 302981
Image 302981.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Polk Co. : Lake Eva, Haines City.
Reproductive State
Collector M. L. Gilbert
Collection Date 09 Feb 1959
Accession Number 303874
Image 303874.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Hillsborough Co. : FL 39, Alderman's Ford, Alafia River.
Reproductive State
Collector M. L. Gilbert
Collection Date 07 Jul 1965
Accession Number 303873
Image 303873.jpg
Plant Atlas Link Plant Atlas Citation

Ceratophyllum demersum
Family Name Ceratophyllaceae
Currently Accepted Name Ceratophyllum demersum L.
Locality USA. Florida , Hillsborough Co. : FL 39, Alderman's Ford, Alafia River.
Reproductive State
Collector M. L. Gilbert
Collection Date 07 Jul 1965
Accession Number 303872
Image 303872.jpg
Plant Atlas Link Plant Atlas Citation