Hydrilla verticillata was NOT FOUND

on 2009-10-22 in Portland, ME
Submitted by InvGalileo on Fri, 2009-10-30 at 02:45 pm
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Field Notes

At Baxter Pond I saw bunches of tall lilly pads that had pink and yellow buds on them. I also saw red, orange and yellow tree leaves floating on the water. There was a fallen birch tree in the water on the far edge. There were also reeds and cattails on the sides of the pond. The trees on the far side of the pond had lost some of their leaves and the remaining leaves were red, brown or orange. There were a lot of cars and trucks going by on the road that was about 20 yards away. The road is called Forest Ave. There were a bunch of stores along the far side of the street too. There weren’t many trees on the side of the pond that we were on. There was grass between the trees and person-made paths along the side. There were also a couple person- made rocks that were on the side of the pond. The water in the pond was clear and pretty still, except for a couple ripples from an occasional breeze.

Supporting evidence
Photo of my evidence.

I did not find it because the bristles in this plant are not the right shape. They are more like hair, or the feather shape, they are skinny.

Photo of my evidence.

I don't think I found it here because the stem is skinnier than the Hydrilla.

Photo of my evidence.

This is not the Hydrilla because the bristles are not placed the right way on the stem(feathered instead of whorled).

Species Observation:
Species Looked For
Common name:
Hydrilla
Scientific name:
Hydrilla verticillata
Was found?
I think I did not find it
Count of individuals?
Coverage?
Dead or alive?
Size:
Sex:
Evidence of reproduction:
Sampling method:
  • Weed weasel
Place studied
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Latitude:
43.676480 ° N
Longitude:
-70.287700 ° W
Observation Site Information
A photo of our study site.
Name:
InvGalileo's visit to Pond in Baxter Woods, Portland, ME (Galileo)
Habitat:
Freshwater - In a pond or lake
Trip Information
Trip name:
Pond in Baxter Woods, Portland, ME (Galileo)
Trip date:
2009-10-22
Nearest town:
Portland, ME
Type of investigation:
Species and Habitat Survey
Ecosystem:
Freshwater
MIDAS number:
Watershed:
Presumpscot
Nearest waterbody:
Photo of our sampling method.
Habitat Observations
Diversity:
6 different species
Water temperature:
6.8 ° C
pH:
6.0
Dissolved oxygen:
5.0 mg/L
Salinity:
Vectors:
  • Paved road

  • Walking trail

  • People

Comments

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agreed: not hydrilla

Thanks for making the effort to search for hydrilla. This plant is known to be in only 2 lakes in the state (as of 2010) so we need to keep our eyes out for more infestations.

You're correct: this isn't hydrilla. I wonder what it is. In the future you may want to photograph a close up of a leaf so you can see the shape clearly. If it's feather divided it may be a milfoil (but don't panic: there are 6 species of milfoil native to Maine).

Thanks again -- keep searching!

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