| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Potamogetonaceae | Potamogeton | Pondweed |  (c) Bradley, Keith | ||
| Potamogetonaceae | Potamogeton alpinus | Red Pondweed, Alpine Pondweed | Ponds and slow-moving streams. | Circumboreal, south in North America to Pennsylvania, Michigan, Wisconsin, Minnesota, South Dakota, New Mexico, Arizona, and California. |  (c) Юлия - CC-BY |
| Potamogetonaceae | Potamogeton amplifolius | Bigleaf Pondweed, Muskie-weed, Bass-weed | Ponds, lakes, sluggish streams, freshwater tidal guts, rivers. | Newfoundland and Labrador (Newfoundland) west to British Columbia, south to e. North Carolina, nw. Georgia (Jones & Coile 1988), n. Alabama, Arkansas, Oklahoma, and California. |  (c) Parks, Summit Metro - CC-BY |
| Potamogetonaceae | Potamogeton berchtoldii ssp. berchtoldii | Slender Pondweed | Millponds, other quiet waters. | Newfoundland and Labrador (Newfoundland) west to Alaska, south to Panhandle Florida, Texas, New Mexico, and California. Reported from South Carolina by Gaddy & Rayner (1980). |  (c) Korol, J. Burke - CC-BY-NC, permission granted to NCBG |
| Potamogetonaceae | Potamogeton bicupulatus | New England Snailseed Pondweed, Small Pondweed | Sinkhole ponds and streams with acidic water. | Maine west to Wisconsin, south to Virginia (Augusta County), North Carolina, and se. Tennessee. |  (c) Wiegersma, Quinten - CC-BY |
| Potamogetonaceae | Potamogeton confervoides | Alga Pondweed, Conferva Pondweed, Tuckerman's Pondweed | Acidic blackwater pools and streams. | Newfoundland and Labrador (Newfoundland) west to Ontario, south to New Jersey and Pennsylvania; disjunct in sc. North Carolina and nc. South Carolina (Fall-line Sandhills). |  (c) Sorrie, Bruce A. - CC-BY |
| Potamogetonaceae | Potamogeton crispus | Curled Pondweed, Curly Pondweed | Ponds, lakes, and streams, often in calcareous waters. | Native of Eurasia and Africa. Maine, Minnesota, s. Saskatchewan and s. British Columbia, south to North Carolina, Panhandle Florida, Texas, Arizona, and California. |  (c) Danielson, Erik |
| Potamogetonaceae | Potamogeton diversifolius | Southern Snailseed Pondweed, Waterthread Pondweed | Pools, ponds, lakes, streams, rivers. | Massachusetts and New York west to Minnesota, Montana, and Oregon, south to c. peninsular Florida, Texas, California, and Mexico. |  (c) Cressler, Alan M. |
| Potamogetonaceae | Potamogeton epihydrus | Ribbonleaf Pondweed | Ponds, lakes, streams, and rivers. | Newfoundland and Labrador (Newfoundland) west to Alaska, south to Georgia, w. Panhandle Florida, s. Mississippi (Sorrie & Leonard 1999), Louisiana, Colorado, and California. |  (c) Danielson, Erik |
| Potamogetonaceae | Potamogeton floridanus | Florida Pondweed | Blackwater rivers. | Apparently endemic to blackwater rivers of the w. Panhandle of Florida. |  (c) Sorrie, Bruce A. - CC-BY |
| Potamogetonaceae | Potamogeton foliosus ssp. foliosus | Leafy Pondweed | Shallow ponds, streams, lakes, and rivers. | Newfoundland and Labrador (Newfoundland) west to Alaska, south to South Carolina, Panhandle Florida, Texas, and Mexico. |  (c) Higgins, Asher P - CC-BY |
| Potamogetonaceae | Potamogeton friesii | Fries’s Pondweed | Estuarine or calcareous waters. | Newfoundland and Labrador (Newfoundland) west to Alaska, s to New Jersey, n. Virginia,, Pennsylvania, Indiana, n. Iowa, Nebraska, and Utah; also Eurasia. |  (c) Berger, Matt - CC-BY |
| Potamogetonaceae | Potamogeton gramineus | Variable Pondweed | Estuarine waters. | Greenland and Alaska, south to sc. Pennsylvania (Rhoads & Klein 1993; Rhoads & Block 2007), New Jersey, West Virginia (Kartesz 1999), n. Virginia, Michigan, Wisconsin, Colorado, Utah, and California; n. Eurasia. Reported for Virginia (Fairfax County); specimen identification needing confirmation. |  (c) Wang, Zihao - CC-BY |
| Potamogetonaceae | Potamogeton hillii | Hill's Pondweed | Spring-fed oxbow ponds. Lakes, rivers, ponds; often alkaline. | Vermont, Massachusetts, Ontario, and Wisconsin south to Pennsylvania, Virginia, and Ohio. |  (c) Steven, Daniel - C, permission granted to NCBG |
| Potamogetonaceae | Potamogeton illinoensis | Illinois Pondweed | Calcareous waters of rivers, streams, lakes, and ponds, spring-fed ponds, spring-fed branches and rivers, sawgrass sloughs, interdune ponds and marshes. | Québec west to Northwest Territories and s. British Columbia, south to s. Florida, Texas, California, Mexico, Central America, and South America. |  (c) Eanes, Mark - CC-BY |
| Potamogetonaceae | Potamogeton natans | Floating Pondweed, Floating Brownleaf | Lakes, ponds, and slow streams. | Newfoundland and Labrador (Newfoundland) west to Alaska, south to e. West Virginia, w. North Carolina, Kansas, New Mexico, Arizona, and California; Eurasia and n. Africa. |  (c) Curtis, Tomás - CC-BY-NC, permission granted to NCBG |
| Potamogetonaceae | Potamogeton nodosus | Longleaf Pondweed, American Pondweed | Ponds, lakes, streams, and rivers. | Maine and Québec west to British Columbia, south to Panhandle Florida, Texas, California, Mexico, and Central America. |  (c) Marcum, Paul |
| Potamogetonaceae | Potamogeton oakesianus | Oakes’s Pondweed | Acidic waters of lakes, streams, bogs, and beaver ponds. | Newfoundland and Labrador (Newfoundland) west to Minnesota, south to Virginia, n. West Virginia, and n. Illinois; apparently disjunct in Montana, and British Columbia, and possibly in s. Alabama (Sorrie, pers. comm.). |  (c) Fleming, Gary P. |
| Potamogetonaceae | Potamogeton obtusifolius | Blunt-leaved Pondweed | Boggy ponds and lakes. | Circumboreal; south in North America to New Jersey, Pennsylvania, Michigan, Wisconsin, Minnesota, Wyoming, and Washington. |  (c) Hosper, Andre - CC-BY |
| Potamogetonaceae | Potamogeton perfoliatus | Perfoliate Pondweed, Clasping-leaf pondweed, Redhead Grass | Fresh to oligohaline tidal aquatic beds, also ponds and other nontidal waters. | Newfoundland and Labrador (Newfoundland), Newfoundland and Labrador (Labrador) west to Michigan, south to ne. North Carolina, and n. Ohio; disjunct in w. Florida, c. peninsular Florida, s. Alabama, and se. Louisiana (where perhaps historical); Guatemala; Eurasia and Africa. |  (c) Berg, Christian - CC-BY |
| Potamogetonaceae | Potamogeton praelongus | Whitestem Pondweed | In lakes in deep water. | Circumboreal, southward in North America to Connecticut, s. New York, n. Pennsylvania, n. Indiana, n. Iowa, Nebraska, Colorado, Utah, and n. California. P. praelongus just extends into the northern part of our flora region. It is probably extant in n. Pennsylvania, but needs further surveying in this area (C. Ciafre, personal communication). |  (c) Graeff, Alex - CC-BY-NC-ND, permission granted to NCBG |
| Potamogetonaceae | Potamogeton pulcher | Spotted Pondweed, Heartleaf Pondweed | Ponds, pools, ditches, streams. | Nova Scotia west to Wisconsin, south to n. peninsular Florida and e. Texas. |  (c) Powell, Eric M - CC-BY-NC, permission granted to NCBG |
| Potamogetonaceae | Potamogeton pusillus | Small Pondweed | Acid and alkaline waters of ponds, lakes, and streams. | Nova Scotia west to Alaska, south to Florida, Mexico, and Central America; Eurasia and Africa. |  (c) Pogacnik, Shaun - C, permission granted to NCBG |
| Potamogetonaceae | Potamogeton richardsonii | Richardson Pondweed | Slow-moving, calcareous waters. | Newfoundland and Labrador (Labrador) west to Alaska, south to Delaware, Maryland, Pennsylvania, n. Ohio, n. Indiana, n. Illinois, Iowa, Nebraska, New Mexico, Arizona, and California; ne. Asia. |  (c) Steven, Daniel - C, permission granted to NCBG |
| Potamogetonaceae | Potamogeton robbinsii | Fern Pondweed, Flatleaf pondweed | Tidal freshwater aquatic beds. | Nova Scotia and Prince Edward Island west to Keewatin and Alaska, south to n. Virginia, n. Illinois, s. Minnesota, Colorado, Utah, and California; disjunct in s. Alabama (possibly introduced?). |  (c) Brinker, Samuel - CC-BY-NC, permission granted to NCBG |
| Potamogetonaceae | Potamogeton spirillus | Northern Snailseed Pondweed | Neutral to acidic waters of ponds, lakes, streams, and rivers. | Newfoundland and Labrador (Newfoundland) west to Manitoba, south to e. Virginia, n. Ohio, n. Iowa, and se. Nebraska. |  (c) Powell, Eric M - CC-BY-NC, permission granted to NCBG |
| Potamogetonaceae | Potamogeton strictifolius | Straightleaf Pondweed | Calcareous waters of ponds and streams. | Newfoundland and Labrador (Newfoundland) west to Yukon Territory, south to w. Virginia (Rockingham County), n. Illinois, Wyoming, and n. Utah. Ne. Asia. |  (c) Graeff, Alex - CC-BY-NC-ND, permission granted to NCBG |
| Potamogetonaceae | Potamogeton tennesseensis | Tennessee Pondweed | Quiet or flowing water. | Sw. Pennsylvania and e. and s. Ohio south to w. Virginia, and se. Tennessee. |  (c) Estes, Dwayne - CC-BY-NC, permission granted to NCBG |
| Potamogetonaceae | Potamogeton vaseyi | Vasey's Pondweed | Ponds, lagoons. | Québec and Ontario south to New Jersey, Pennsylvania, ne. Ohio, nw. Indiana, ne. Illinois, and Iowa. |  (c) Wang, Zihao - CC-BY |
| Potamogetonaceae | Potamogeton zosteriformis | Flatstem Pondweed | Quiet calcareous or alkaline tidal waters. | Newfoundland and Labrador (Newfoundland) west to Alaska, south to n. Virginia, ne. West Virginia, n. Illinois, Kansas, Utah, and California. |  (c) Steven, Daniel - C, permission granted to NCBG |
| Potamogetonaceae | Potamogetonaceae | Pondweed Family | (c) Bradley, Keith | ||
| Potamogetonaceae | Stuckenia | Sago-pondweed |  (c) Faulkner, Erin - CC-BY-NC, permission granted to NCBG | ||
| Potamogetonaceae | Stuckenia filiformis var. alpina | Calcareous or brackish waters. | Nova Scotia west to Alaska, south to s. Pennsylvania, Ohio, Michigan, Wisconsin, Minnesota, Nebraska, New Mexico, Arizona, and California; e. Asia. |  (c) Garon-Labrecque, Marie-Ève - CC-BY-NC-ND | |
| Potamogetonaceae | Stuckenia filiformis var. occidentalis | In calcareous waters. | Nova Scotia west to Alaska, south to Ohio, Minnesota, Colorado, Utah, Nevada, and Oregon. |  (c) Oldham, Michael J. - CC-BY-NC, permission granted to NCBG | |
| Potamogetonaceae | Stuckenia pectinata | Sago-pondweed | Calcareous or brackish waters of ponds, lakes, estuaries, sounds. | The species is irregularly cosmopolitan, but more commonly encountered in the Great Lakes region. | (c) Faulkner, Erin - CC-BY-NC, permission granted to NCBG |
| Potamogetonaceae | Stuckenia striata | Western Pondweed | Fresh or brackish waters. | S. Texas west to Idaho and Oregon, south to sc. Mexico. | |
| Potamogetonaceae | Stuckenia vaginata | Sheathed Pondweed | Lakes. | Circumboreal, south in North America to Ohio, ne. Illinois, Minnesota, South Dakota, Colorado, Utah, Nevada, and Washington. |  (c) jozien - CC-BY-NC |
| Potamogetonaceae | Zannichellia | Horned Pondweed |  (c) Delon, David - CC-BY | ||
| Potamogetonaceae | Zannichellia palustris | Horned Pondweed | Fresh or brackish water of ponds, lakes, and estuaries. | The species occurs throughout much of the world. | (c) Delon, David - CC-BY |