pondweed


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pondweed,

common name for the family Potamogetonaceae, and for weedy aquatic herbs of the genus Potamogeton, of which about 50 known species inhabit North American ponds and slow streams. They have slender stems and small spikes of inconspicuous flowers appearing above the water. A few species are cultivated—some as waterfowl food and for fish protection in conservation projects. The saltwater eelgrass (genus Zostera) of gently sloping shores is closely related. Pondweeds are classified in the division MagnoliophytaMagnoliophyta
, division of the plant kingdom consisting of those organisms commonly called the flowering plants, or angiosperms. The angiosperms have leaves, stems, and roots, and vascular, or conducting, tissue (xylem and phloem).
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, class Liliopsida, order Najadales.

pondweed

1. any of various water plants of the genus Potamogeton, which grow in ponds and slow streams: family Potamogetonaceae
2. Brit any of various unrelated water plants, such as Canadian pondweed, mare's-tail, and water milfoil, that have thin or much divided leaves
References in periodicals archive ?
Points indicate hard bottom and walleyes love hard bottom, which is also ideal substrate for large-leaf pondweed, the greatest walleye plant on earth.
In other locations around the southeastern United States, one study indicated that hydrilla is preferred over natives such as wildcelery or Illinois pondweed (3); while other studies have shown that waterfowl prefer native species to hydrilla or other exotics (4), (5).
The number of pollution- and turbidity-tolerant sludge or sewage worms, blackfly larvae, leeches, curly-leaf pondweed, and various types of carp increases.
One of the worst invasive is African pondweed, which has overtaken parts of Lough Corrib in Galway, and is likely to expand to neighbouring lakes.
Submerged oxygenators: Canadian Pondweed, Eelgrass, Fanwort, Hornwort, Water Moss, and Water Violet.
Long-Leaf Pondweed (Potamogelon nodosus) was growing in substantial colonies in Hatchery Bay in 1.
These plants, along with the peppergrass, Kissimmee grass and pondweed, provide essential habitat for freshwater gamefish.
A thick stand of exotic curlyleaf pondweed broke the surface in a narrow band extending for several hundred yards over otherwise open water.
The meeting included experts from British Waterways, Natural England, Countryside Council for Wales, the Environment Agency, the University of Liverpool and Chester Zoo, who have agreed a series of actions to promote the protection of two rare freshwater submerged plants, Grasswrack Pondweed and Floating Water Plantain.
Other food options bears might resort to in the fall--like earthworms, pondweed root, and elk thistle--lack the concentrated caloric value of whitebark pine seeds.