American Eelgrass

Vallisneria americana

"Vallisneria americana" is a plant in the family Hydrocharitaceae, the "tape-grasses". "V. americana" is a fresh water species that can tolerate salt, living in salinities varying from fresh water to 18 parts per thousand, although the limit to the salt tolerance is unclear, and is generally dependent on the duration and intensity of the plants’ exposure to the saline water.
Vallisneria americana This is a picture of Vallisneria americana in Piney Run Reservoir at Piney Run Park in Carroll County, Maryland. Geotagged,Summer,United States,Vallisneria americana

Habitat

Like many seagrass ecosystems, "V. americana" beds provide a rich abundance of prey as food for other species, and is a refuge for many species, including commercial, recreational, endangered and invasive organisms, and also acts as a nursery for fishery species. Beds of "V. americana", especially in Louisiana, have been known to be homes to many crustacean, gastropods, invertebrates and fish, and have been known to be grazed on by West Indian Manatees. The beds of "V. americana" are great at stabilizing sediment and shorelines, facilitating detrital food webs, and improving water quality by filtering the surrounding water.

Reproduction

"V. americana" generally maintains its population by clonal reproduction through the use of runners, but they are also capable of reproducing through the use of seeds. Salinity seems to affect the germination process in the same way it does the growth of the plant.

References:

Some text fragments are auto parsed from Wikipedia.

Taxonomy
KingdomPlantae
DivisionAngiosperms
ClassMonocots
OrderAlismatales
FamilyHydrocharitaceae
GenusVallisneria
SpeciesV. americana