Variableleaf Pondweed
Potamogeton gramineus
Pondweed family (Potamogetonaceae)
Pondweeds are found throughout the United States. Grassy Pondweed is found through all western and northern states in shallow waters of ponds, lakes, and marshes. Grassy Pondweed is often called Variable Leaf Pondweed because its submerged leaves and floating leaves differ in length, width, number of , and presence of a .
nerves -- Another name for a vein.
A peduncle is a common stalk of a cluster of flowers.
achene -- a type of simple dry fruit produced by many species of flowering plants. For example, a rose hip holds a few achenes.
ovate -- Oval, egg-shaped, with a tapering point.
fruit -- any seed-bearing structure in flowering plants. It is formed from the ovary after flowering.
sessile -- attached without a stalk. For example, a leaf that clasps the stalk. A petiolate leaf has a stalk.
elliptic -- Oval, with no point or a very short point.
A spike is an unbranched, indeterminate inflorescence in which the flowers are without stalks.
petiole -- the stalk of a leaf.
A simple leaf blade is one that is not divided into separate leaflets.
An inflorescence is a group or cluster of flowers arranged on a stem.