Japanese knotweed
Fallopia japonica
FOUND by camel12010-08-24
Bangor
ID Confirmed
Quality checked by me
Peer reviewed by me
Field Notes
It was a beautiful sunny day. The edge of a school soccer field is the site for examination. The quadrat was hung on the fairly tall bushes that were flowering with small white flowers. The bush was thick and right on the edge of the soccer field where they do not mow.
Supporting Evidence
The plant has flowers that small white flowers that grow in finger like bunches.
The leaf type is simple, the shape is oval, and the edge is smooth.
The stems have swollen joints and grow in a zig zag pattern.
Species Observation: Species Looked For
Did you find it?:
I think I found it
Scientific name:
Fallopia japonicaCommon name:
Japanese knotweed
Count of individuals:
20-50
Coverage:
Between 1/2 and 3/4
Reproduction:
Flower (plants)
Sampling method:
Quadrat (user-placement)
Place Studied
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Latitude:
N 44.797954 °
Longitude:
W -68.784907 °
Observation Site Information
Name:
camel1's visit to school field
Habitat:
Upland - Developed areas
Trip Information
Name:
school field
Trip date:
Tue, 2010-08-24 10:00
Town or city:
Bangor
Type of investigation:
Species and Habitat Survey
Ecosystem:
Upland
Watershed:
Penobscot
Sampling Method:
Quadrat (user-placement)
Nearest waterbody:
Penobscot River
Habitat Observations
Species diversity:
1 different species
Evidence of vectors:
People
Tree canopy cover:
Open to 1/4 covered
Soil moisture:
Dry
Comments
Excellent Picture Evidence
Impressive field work. I've been looking for F. japonica near where I live and have been questioning my ability to identify it properly. Your photographic evidence now makes me feel confidant that I have NOT seen F. japonica in my area (...which or course, is a GOOD thing).
Keep up the great work.
Density matters
I was cruising the site this morning and was struck by how tall and dense your knotweed stand is. Wow! Your diversity count says it all.
It is really interesting to compare your observation to the recent observation by trythis on Vinalhaven and slabbe in Oakland. Different habitats seem to yield different growing patterns. ....or knotweed gets its nutrients from watching soccer games :)
Nice pictures!
Dear camel1,
Great observation. You have fully convinced me that what you saw was indeed F. japonica.
I can make out the soccer field next to your site - sweet! And a fairly normal place to find this species.
Good work!