Invasive SpeciesHydrilla

Hydrilla verticillata
NOT FOUND by InvGalileo
2009-10-22
Portland, ME
ID Confirmed
Quality checked by
Peer reviewed by
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
Did you find it?: 
I think I did not find it
Scientific name:
Hydrilla verticillata
Common name:
Hydrilla
Count of individuals: 
Coverage: 
Reproduction: 
How big is it?: 
Is it male or female?: 
Sampling method: 
Weed weasel
Photo of our sampling method.
Place Studied
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Map this species
Latitude: 
N 43.676480 °
Longitude: 
W -70.287700 °
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
Name:
Pond in Baxter Woods, Portland, ME (Galileo)
Trip date: 
Thu, 2009-10-22 13:25
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: 
6 different species
Evidence of vectors: 
Paved road
Walking trail
People
Water temperature: 
6.8°C
pH: 
6.0
Dissolved oxygen: 
5.0mg/L

Comments

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!