Japanese knotweed
Fallopia japonica
NOT FOUND by LBolduc2010-08-25
Pittsfield
ID Confirmed
Quality checked by Lori Stevens
Peer reviewed by
Field Notes
It was 4:30 in the afternoon two days before school started. The athletic fields had recently been painted with lines for sports teams. It was very sunny out with few clouds. The fields were incredibly dry and the dirt was powdery. There were no bugs, but we did hear crickets. Rain was forecast for the next day.
Supporting Evidence
The leaves on the plant that was most similar to Japenese Knotwood in our quadrat were smooth not toothed.
The leaves of Japanese Knotweed are about 12 cm wide, the leaves of this plant were not.
The stems of our plant were not bamboo like they were brown and did not have swollen joints.
Species Observation: Species Looked For
Did you find it?:
I think I did not find it
Scientific name:
Fallopia japonicaCommon name:
Japanese knotweed
Count of individuals:
Coverage:
Reproduction:
Sampling method:
Quadrat (user-placement)
Place Studied
We\’re sorry, Javascript is required to view the map. You may wish to upgrade to a newer browser in order to view this Google Map.
Map this species
Latitude:
N 44.789670 °
Longitude:
W -69.391580 °
Observation Site Information
Name:
LBolduc's visit to Warsaw Middle School
Habitat:
Upland - Field
Trip Information
Name:
Warsaw Middle School
Trip date:
Wed, 2010-08-25 16:30
Town or city:
Pittsfield
Type of investigation:
Species and Habitat Survey
Ecosystem:
Upland
Watershed:
Lower Kennebec
Sampling Method:
Quadrat (user-placement)
Nearest waterbody:
Sebasticook River
Habitat Observations
Species diversity:
4 different species
Evidence of vectors:
Walking trail
People
Tree canopy cover:
Between 1/4 and 1/2
Soil moisture:
Dry
Comments
Not knotweed
Hello LBolduc,
Well done - the plant(s) you observed are certainly not Fallopia japonica.
I was a little confused by your first written evidence. F. japonica does not have toothed edges on its leaves, and neither did the leaf in your picture - at least not the first one (the leaf in your second image does appear to have leaves with a toothed edge).
The use of the ruler in your second image is fabulous - great picture, and really appropriate given your written evidence. Super job.
it's a bit hard to see the stem in your last image. Don't forget to use the Macro function, and be patient with the camera and yourself. It takes some practice to learn just how far the camera needs to be from the thing you want to photograph so that it can be in focus.
All in all, great effort for your first time out. Good luck with the start of school in two days!