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A few more
Aquatic Macrophytes
Nitella
No scent
Smooth stems and branches
No striations, feels less coarse
Often grows deep
May have forked branches
Found in hard and soft water
Both
Similar growth form
Orange ball-shaped
reproductive structures
Chara
Usually smells like a skunk
Striations on stems and branches
Feels coarse
Often has calcium carbonate deposit
Usually does not have forked branches
Usually in hard water
Najas flexilis
Vallisneria
americana
Bushy Pondweed or
Slender Naiad
Wild Celery
•Annual, must reproduce
every year by seed
•Appears later in season
•Long ribbony leaves
•Submersed, leaves do
not float on surface
•Flowers on “corkscrew” stalk
Heteranthera
dubia
Water stargrass
• Looks much like
Potamogeton
• Leaves have no mid-rib
• In early spring looks
like dead black twig
Hydrilla verticillata
Leves in 4’s and 5’s
Serated edge
Sometimes had spines along
underside of leaf midrib
Elodea canadensis
Leaves in threes
No serations or spines
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