Potamogeton nodosus

Distribution Map: Based on vouchered plant specimens from wild populations. Cultivated occurrences are not mapped. View county names by placing the cursor over the map.

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Family:	POTAMOGETONACEAE
Species:	Potamogeton nodosus Poir.
Common Name:	LONGLEAF PONDWEED
Status:	Native, OBL (NWPL)
Specimen:	View details of USF Herbarium specimens

** Not applicable or data not available.

Classification

Division
Class
Sub Class
Order	ALISMATALES
Family	POTAMOGETONACEAE
Genus	Potamogeton
Species	Potamogeton nodosus Poir. - LONGLEAF PONDWEED

Citation

Citation	POTAMOGETON NODOSUS Poiret, in Lamarck, Encycl., Suppl. 4: 535. 1816.
Basionym:	**
Type:	CANARY ISLANDS: Without data, Broussonet s.n. (holotype: P?).

** Not applicable or data not available.

Source

County	Herbaria	Literature Citation (If Applicable)
Jackson	FLAS
Wakulla	FLAS

Synonyms

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

Synonym	Full Citation	Basionym	Type
Potamogeton americanus	Potamogeton americanus Chamisso & Schlechtendal, Linnaea 2: 226. 1827.
Potamogeton fluitans subsp. americanus	Potamogeton fluitans Roth, subsp. americanus (Chamisso & Schlechtendal) Graebner, in Engler, Pflanzenr. 4(Heft 31): 60. 1907.	BASIONYM: Potamogeton americanus Chamisso & Schlechtendal 1827.
Potamogeton americanus var. novaeboracensis	Potamogeton americanus Chamisso & Schlechtendal, var. noveaboracensis (Morong) A. Bennett, J. Bot. 31: 297. 1893.	BASIONYM: Potamogeton lonchites Tuckerman, var. novaeboracensis Morong 1893.
Potamogeton coloratus var. jamaicensis	Potamogeton coloratus Hornemann, var. jamaicensis (Grisebach) Graebner, in Engler, Pflanzenr. 4(Heft 31): 69. 1907.	BASIONYM: Potamogeton plantagineus Ducros ex Roemer & Schultes, var. jamaicensis Grisebach 1861.
Potamogeton fluitans var. novaeboracensis	Potamogeton fluitans Rotha, var. novaeboracensis (Morong) Magnin, Bull. Soc. Bot. France 43: 436. 1897.	BASIONYM: Potamogeton lonchites Tuckerman, var. novaeboracensis Morong 1893.
Potamogeton insulanus	Potamogeton insulanus Hagström, Kongl. Svenska Vetenskapsakad Handl. 55(5): 154. 1916.		TYPE: PUERTO RICO: Without data, Sintenis 2537 (holotype: S).
Potamogeton lonchites var. novaeboracensis	Potamogeton lonchites Tuckerman, var. novaeboracensis Morong, Mem. Torrey Bot. Club 3(2): 20. 1893.		TYPE: NEW YORK: Wayne Co.: Erie Canal near [e.g. N of] Seneca Lake, s.d., Tuckerman s.n. (lectotype: NY; isolectotype: AC). Lectotypified by Z. Kaplan & Reveal, Brittonia 65: 459. 2013.
Potamogeton mexicanus	Potamogeton mexicanus A. Bennett, J. Bot. 25: 289. 1887.		TYPE: MEXICO: Distrito Federal: Valle de Mexico, s.d., Schmitz s.n. (lectotype: BM; isolectotype: P). Lectotypified by R. R. Haynes & Holm-Nielsen, Fl. Neotrop. 85: 26. 2003.
Potamogeton montanus	Potamogeton montanus C. Presl, Reliq. Haenk. 1: 85. 1835.		TYPE: CHILE:
Potamogeton nuttallii var. portoricensis	Potamogeton nuttallii Chamisso & Schlechtendal, var. portoricensis (Graebner) Graebner, in Engler, Pflanzenr. 4(Heft 31): 56. 1907.	BASIONYM: Potamogeton pennsylvanicus Willdenow ex Chamisso & Schlechtendal, var. portoricensis Graebner 1903.
Potamogeton oblongifolius	Potamogeton oblongifolius J. R. Forster, Fl. Amer. Sept. 7. 1771, nom. rej.		TYPE: VIRGINIA: Lancaster Co.: Near a bridge at Lancaster, s.d., Mitchell s.n. (lectotype: BM). Lectotypified by Reveal et al., Taxon 51: 865. 2002.
Potamogeton occidentalis	Potamogeton occidentalis Sieber ex Chamisso & Schlechtendal, Linnaea 2: 224. 1827.		TYPE: MARTINIQUE: Without data, Sieber 275 (lectotype: LE; isolectotypes: G, GOET, P). Lectotypified by R. R. Haynes & Holm-Nielsen, Fl. Neotrop. 85: 26. 2003.
Potamogeton pennsylvanicus var. portoricensis	Potamogeton pennsylvanicus Willdenow ex Chamisso & Schlechtendal, var. portoricensis Graebner, in Urban, Symb. Antill. 4: 73. 1903.		TYPE: PUERTO RICO:
Potamogeton plantagineus var. jamaicensis	Potamogeton plantagineus Ducros ex Roemer & Schultes, var. jamaicensis Grisebach, Fl. Brit. W. Ind. 506. 1861.		TYPE: JAMAICA:
Potamogeton rotundatus	Potamogeton rotundatus Hagström, Kongl. Svenska Vetenskapsakad. Handl. 55(5): 153. 1916.		TYPE: MEXICO: Chihuahua: Guerrero, 8 Sep 1887, Pringle 1390 (lectotype: U)PS; isolectotype: US). Lectotypified by R. R. Haynes & Holm-Nielsen, Fl. Neotrop. 85: 26. 2003.

Specimens

Country	State	County	Date	Specimen	Notes
USA	Mississippi	Noxubee Co.	20 Jul 1956	J. D. Ray, Jr. 7113
USA	Mississippi	Noxubee Co.	01 Aug 1955	J. D. Ray, Jr. 5227
USA	South Carolina	Kershaw Co.	28 Jul 1957	A. E. Radford 27663
USA	Louisiana	Cameron Par.	14 Aug 1973	V. I. Sullivan 1569
USA	Mississippi	Madison Co.	25 May 1979	K. E. Rogers 46755
USA	Louisiana	Sabine Par.	24 Jun 1979	C. M. Allen 9106	This sheet is also numbered as Vincent 2374.
USA	Tennessee	Meigs Co.	16 Jun 1992	V. E. McNeilus 92-509
USA	Alabama	Jackson Co.	29 Sep 2001	D. E. Giannasi 180
USA	South Carolina	Clarendon Co.	31 May 1984	G. Long 880
USA	Arkansas	Izard Co.	04 Aug 1970	R. D. Thomas 20514
Dominica		St. David Par.	31 May 1996	S. R. Hill 28036
USA	Iowa	Louisa Co.	Aug 1897	B. Shimek s.n.
USA	Oklahoma	Payne Co.	22 Sep 1961	J. A. Hooser 81
USA	Pennsylvania	Northampton Co.	1849	J. Wolle s.n.
USA	Iowa	Louisa Co.	Aug 1897	B. Shimek s.n.
USA	Texas	Jeff Davis Co.	02 Jun 1962	D. S. Correll 25435
USA	Nebraska	Jefferson Co.	09 Jul 1992	V. E. McNeilus 92577
USA	Oklahoma	Payne Co.	09 Jun 1969	U. T. Waterfall 17440
USA	Oklahoma	Marshall Co.	12 Jun 1976	R. J. Tyrl 1111
USA	Texas	Jeff Davis Co.	02 Jun 1962	D. S. Correll 25432
USA	Texas	Menard Co.	04 Jun 1962	D. S. Correll 25449
USA	Oklahoma	Roger Mills Co.	28 Jul 1979	R. W. Couch 93
USA	Ohio	Shelby Co.	02 Aug 2007	A. R. Franck 564
USA	Illinois	Tazewell Co.	23 Jul 1997	S. R. Hill 29621
USA	Illinois	Lake Co.	15 Sep 2011	S. R. Hill 38762
USA	Missouri	Jasper Co.	27 May 1922	E. J. Palmer 21526
USA	California	Sonoma Co.	16 Jul 1955	P. Rubtzoff 1967
USA	Wisconsin	Price Co.	29 Aug 1963	H. H. Iltis 20688
USA	California	Kern Co.	04 Jul 1959	E. C. Twisselmann 5440
USA	Arizona		13 Jul 1972	P. Genelle 1473
USA	Minnesota	Clearwater Co.	25 Jul 1974	K. E. Rogers 10003

Listed Status: Florida

Listed Status:	(Florida):Source - Plants in the Preservation of Native Flora of Florida Act. Chapter 5B-40, Florida Administrative Code. 1998, amended.
Endangered:	A species of plants native to the state that are in imminent danger of extinction within the state, the survival of which is unlikely if the causes of a decline in the number of plants continue, and includes all species determined to be endangered or threatened pursuant to the Federal Endangered Species Act of 1973, as amended.
Threatened:	Listed as Threatened Plants in the Preservation of Native Flora of Florida Act. Defined as species of plants native to the state that are in rapid decline in the number of plants within the state, but which have not so decreased in such number as to cause them to be endangered.

Listed Status: US

Listed Status: US	(U.S.) Source - List of Endangered and Threatened Wildlife and Plants under the provisions of the Endangered Species Act of 1973, as amended.
Endangered:	Any species which is in danger of extinction throughout all or a significant portion of its range.
Threatened:	Any species which is likely to become an endangered species within the foreseeable future throughout all or a significant portion of its range.

WAP: Wetland AssessmentProcedure

Wetland Assessment Procedure (WAP): Source - Southwest Florida Water Management District, Wetland Assessment Procedure Instruction Manual for Isolated Wetlands (March 2005).

AD:	Adaptive Species. Plant species designated as FAC or Upland by DEP, but commonly seen in the transition zone in limited numbers.
D:	Deep Species. Plant species commonly found in the deep zone, and designated either FAC or OBL by DEP.
OD:	Outer Deep Species. Plant species commonly found in the outer deep zone, and designated either FACW or OBL by DEP.
T:	Transition Species. Plant species commonly found in the transition zone, and designated either FACW or OBL by DEP.
U:	Upland Species. Plant species that are not expected to be seen in wetlands.

ANY - WAP critieria is not taken into consideration
Yes - Show results with WAP designations
No - Show results without WAP designations

FISC: Florida Invasive Species Council

FISC:

Source - Florida Invasive Species Council's 2017 List of Florida's Most Invasive Species

Category I - Species that are invading and disrupting native plant communities in Florida. This definition does not rely on the economic severity or geographic range of the problem, but on the documented ecological damage caused.

Category II - Species that have shown a potential to disrupt native plant communities. These species may become ranked as Category I, but have not yet demonstrated disruption of natural Florida communities.

DEP: Department of Environmental Protection

Wetland Status, Department of Environmental Regulation (DEP): Source - Delineation of the Landward Extent of Wetlands and Surface Waters, Chapter 62-340, Florida Administrative Code. 1994.

OBL:	Obligate wetland. Occurs almost always under natural conditions in wetlands.
FACW:	Facultative Wetland. Usually occurs in wetlands, but occasionally found in non-wetlands
FAC:	Facultative. equally likely to occur in wetlands or non-wetlands.

NWPL: National Wetland Plant List

National Wetland Plant List (NWPL): Source - Lichvar, R.W., M. Butterwick, N.C. Melvin, and W.N. Kirchner. 2014. The National Wetland Plant List: 2014 Update of Wetland Ratings. Phytoneuron 2014-41: 1-42.

OBL:	Obligate Wetland. Occurs almost always (estimated probability 99%) under natural conditions in wetlands.
FACW:	Facultative Wetland. Usually occurs in wetlands (estimated probability 67%-99%), but occasionally found in non-wetlands.
FAC:	Facultative. Equally likely to occur in wetlands or non-wetlands (estimated probability 34%-66%).
FACU:	Facultative Upland. Usually occurs in non-wetlands (estimated probability 67%-99%), but occasionally found in wetlands (estimated probability 1%-33%).
UPL:	Obligate Upland. Occurs in wetlands in another region, but occurs almost always (estimated probability 99%) under natural conditions in non-wetlands in the regions specified.

Persisting

Identifying species that appear as waifs or only periodically appear in the flora for a few seasons.

Any - Persisting critieria is not taken into consideration
Yes - Show results with a Persisting value of Y
No - Show results without Persisting value of N

Duration

Annual:	Plants that perform their entire lifecycle within a single growing season. All roots, stems, and leaves die at the end of the growing season. Over wintering seeds allow the next generation to appear.
Biennial:	A plant that is typically vegetative its first year and blooms the following season. Once it has bloomed and set seed, the plant dies. Garlic mustard is an example of a biennial.
Perennial:	These plants live for three or more seasons. Many perennials may not be mature enough to bloom during its first year. Perennial wildflowers re-grow each season from overwinter root material.

Category

Vascular:	Any of various plants that have the vascular tissues xylem and phloem. The vascular plants include all seed-bearing plants (the gymnosperms and angiosperms) and the pteridophytes (including the ferns, lycophytes, and horsetails). Also called tracheophyte.
Bryophyte:	A large group of seedless green plants including the mosses, liverworts, and hornworts. Bryophytes lack the specialized tissues xylem and phloem that circulate water and dissolved nutrients in the vascular plants. Bryophytes generally live on land but are mostly found in moist environments, for they have free-swimming sperm that require water for transport. In contrast to the vascular plants, the gametophyte (haploid) generation of bryophytes constitutes the larger plant form, while the small sporophyte (diploid) generation grows on or within the gametophyte and depends upon it for nutrition.
Lichen:	The mutualistic symbiotic association of a fungus with an alga or a cyanobacterium, or both. The fungal component of a lichen absorbs water and nutrients from the surroundings and provides a suitable environment for the alga or cyanobacterium. These live protected among the dense fungal hyphae and produce carbohydrates for the fungus by photosynthesis. Owing to this partnership, lichens can thrive in harsh environments such as mountaintops and polar regions. The more familiar lichens grow slowly as crusty patches, but lichens are found in a variety of forms, such as the tall, plantlike reindeer moss. The association between the different organisms in a lichen is so close that lichens are routinely referred to as a single organism, and scientists classify lichens using the name of the fungal component.

(Definitions from: American Heritage Science Dictionary)

Growth Habit

Intro paragraph to be provided by New York.

Vine:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
Shrub:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
Tree:	DESCRIPTION TO BE PROVIDED BY NEW YORK.
Et cetera:	DESCRIPTION TO BE PROVIDED BY NEW YORK.

State Rank

This numeric rank provides the relative rarity for each species based on a scale from 1 (very rare) to 5 (common). These ranks carry no legal status.

S1 - Typically 5 or fewer occurrences, very few remaining individuals, acres, or miles of stream, or some factor of its biology making it especially vulnerable in the state.
S2 - Typically 6 to 20 occurrences, few remaining individuals, acres, or miles of stream, or factors demonstrably making it very vulnerable in the state.
S3 - Typically 21 to 100 occurrences, limited acreage, or miles of stream in the state.
S4 - Apparently secure in the state.
S5 - Demonstrably secure in the state.
SE - State exotic or non-native.
SH - Historically known from the state, but not seen in the past 15 years.
SNA - Species for which a rank is not applicable. This is mainly those species which are now excluded from flora for various reasons.
SNR - Not yet ranked.
SX - Apparently extirpated from the state.

Global Rank

Each species' global rank is determined by NatureServe. These ranks carry no legal weight. The global rank reflects the species worldwide rarity.

G1 - Critically imperiled globally because of extreme rarity (5 or fewer occurrences), or very few remaining acres, or miles of stream) or especially vulnerable to extinction because of some factor of its biology.
G2 - Imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors.
G3 - Imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors.
G4 - Imperiled globally because of rarity (6 - 20 occurrences, or few remaining acres, or miles of stream) or very vulnerable to extinction throughout its range because of other factors.
G5 - Demonstrably secure globally, though it may be quite rare in parts of its range, especially at the periphery.
GH - Historically known, with the expectation that it might be rediscovered.
GNA - Species for which a rank is not applicable. NatureServe does not typically rank hybrid species.
GNR - Not yet ranked.
GX - Species believed to be extinct.

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Associated Ecological Communities

View a List of All Ecological Communities

For more information, contact: Richard Wunderlin or Bruce Hansen, Alan Franck, or Karla Alvarado

Web Development: USF Water Institute

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Citation Information:

Wunderlin, R. P., B. F. Hansen, A. R. Franck, and F. B. Essig. 2023. Atlas of Florida Plants (http://florida.plantatlas.usf.edu/). [S. M. Landry and K. N. Campbell (application development), USF Water Institute.] Institute for Systematic Botany, University of South Florida, Tampa.

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Definition: Vouchered Specimen

A voucher specimen is a pressed and thoroughly dried plant sample deposited in a herbarium, and is intended to be a permanent record supporting research purposes. A voucher may be a record of a plant's occurrence in a particular area, or a specific example of a plant used in a scientific investigation.

Proper vouchers display all the necessary attributes for complete identification of the plant, and are to be accompanied by accurate locality, habitat, collection time, and collector data.

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