Potamogeton gramineus
USDA, NRCS. 2018. The PLANTS Database (http://plants.usda.gov, 28 March 2018). National Plant Data Team, Greensboro, NC 27401-4901 USA.
What is Variable-leaf Pondweed?
Physical Characteristics
Leaves:
Submersed Leaves:
- Reddish-green in color
- Up to 5.12 inches long
- Up to 0.47 inches wide
- Pointed tips
Floating Leaves:
- 0.59-2.76 inches long
- 0.39-1.18 inches wide
- Stalks longer than leaves
Flowers:
- Small
- Clustered
- Above water
- Stalks up to 7.87 inches long
Fruit:
- Small, greenish brown and egg-shaped
- Dry
- One seeded
- Does not open to release seed when ripe
- 0.06-0.12 inches long
- Slightly rigid on one side
Stem:
Where Does it Grow?
Variable-leaf pondweed can be found in ponds, lakes and marshes.
Pros and Cons of Variable-Leaf Pondweed
Variable-leaf pondweed has seven hybrids. Submerged portions of all aquatic plants provide habitats for many micro and macro invertebrates. These invertebrates in turn are used as food by fish and other wildlife species (e.g. amphibians, reptiles, ducks, etc.). After aquatic plants die, their decomposition by bacteria and fungi provides food (called “detritus”) for many aquatic invertebrates.