Variable watermilfoil
Myriophyllum heterophyllum
FOUND by BioNewtonBaxter2009-10-22
Portland, ME
ID Questioned
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Field Notes
We had a few problems that might skew our observations. We couldn’t smell anything. We could hear cars whizzing past us. We also saw a lot of leaves on the pond and around the pond, also there were 2 trees that had fallen into the pond. We were surprised because we didn’t expect to see trees in the water.
Supporting Evidence
The Watermilfoil was found submerged.
The Watermilfoil had whorled leaves
The Watermilfoil had feather divided leaves
Species Observation: Species Looked For
Did you find it?:
I think I found it
Scientific name:
Myriophyllum heterophyllumCommon name:
Variable watermilfoil
Count of individuals:
Coverage:
Less than 1/4 covered
Reproduction:
How big is it?:
Is it male or female?:
Sampling method:
Weed weasel
Place Studied
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Latitude:
N 43.676480 °
Longitude:
W -70.287700 °
Observation Site Information
Name:
BioNewtonBaxter's visit to Pond in Baxter Woods, Portland, ME (Newton)
Habitat:
Freshwater - In a pond or lake
Trip Information
Name:
Pond in Baxter Woods, Portland, ME (Newton)
Trip date:
Thu, 2009-10-22 11:05
Town or city:
Portland, ME
Type of investigation:
Species and Habitat Survey
Ecosystem:
Freshwater
Watershed:
Presumpscot
Sampling Method:
Just looking around
Net
Trap
Weed weasel
Nearest waterbody:
MIDAS Code:
Habitat Observations
Species diversity:
3 different species
Evidence of vectors:
Paved road
Walking trail
People
Water temperature:
6.9°C
pH:
8.0
Dissolved oxygen:
6.0mg/L
Comments
Too skinny!
You were looking for the right features, but fortunately the plant you found is only a partial match. I would more closely describe the leaves in your photo as elliptical, rather than feather divided. I'm also not seeing a plant that resembles a bottle brush or racoon tail.
Were there a lot of the same submerged plant in one place creating a dense mat of weeds? That would be a good indication of an invasion.
We have it too
We have a HUGE milfoil problem in Lake Arrowhead, especially in the Brown Brook area. Thankfully, we've taken steps to stop it.