Invasive SpeciesCurly leaf pondweed

Potamogeton crispus
NOT FOUND by kezarslc
ID Confirmed
Quality checked by kezarslc
Peer reviewed by willardolsosn and Knightcr2
Field Notes
Today, Gretchen and I were able to work together on a warm, sunny day to do a VS investigation. The small pond had murky water and a dozen or so ducks on the shore or in the water. Being at UMaine Farmington, there was traffic noise. Our prediction: We predict that Rollo Pond is at low risk for invasive aquatics because the data we viewed showed no evidence of invasive aquatics in nearby ponds. Consequently, we do not believe we will find any invasive aquatic plants.
Supporting Evidence
Photo of my evidence.
Curly Leaf Pondweed is 1 cm wide and 4-10 cm wide, long and narrow. The leaves we found were wider (7 cm at the widest) and tapered to a point.
Photo of my evidence.
The Curly Leaf Pondweed has parallel veins that run lengthwise. The leaf we observed has one main vein with others branching off at 45 degree angles from it.
Photo of my evidence.
Curly Leaf Pondweed is finely toothed but our sample has larger teeth.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find it
Scientific name:
Potamogeton crispus
Common name:
Curly leaf pondweed
Sampling method: 
Weed weasel
Photo of our sampling method.
Place Studied
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Map this species
N 44.665052 °
W -70.146125 °
Observation Site Information
A photo of our study site.
Freshwater - By water's edge
Trip Information
Rollo Pond - Farmington
Trip date: 
Tue, 2017-08-15 11:30
Town or city: 
Type of investigation: 
Species and Habitat Survey
Lower Kennebec
MIDAS Code: 
Habitat Observations
Species diversity: 
4 different species
Evidence of vectors: 
Paved road
Walking trail
Water temperature: 
Dissolved oxygen: 


Greetings Kezarsic,

My apologies for the delay in reviewing your Vital Signs submission. I have been out hunting for aquatic invaders on the lakes of Maine!

You are quite right in your findings: the plant you found is NOT curly leaf pondweed, for all of the reasons you explain and more. I believe what you found is a birch leaf. Maine is home to several birch species that may be found at or near the water's edge. In many aquatic ecosystems, tree leaves are an important part of the food web, providing food and cover for microscopic and macroscopic organisms that are in turn consumed by other critters.

I enjoyed reading your observations from your visit to Rollo Pond. Please keep up the great work, keeping a watchful eye out for aquatic invaders.

All the best,

Roberta Hill
Invasive Species Program Director
Maine Volunteer Lake Monitoring Program