Fallopia japonicaFOUND by 41sg71
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Peer reviewed by 41sg7
On May 5th, my Japanese knotweed investigation took place. It was around 3:00pm and the weather was sunny, and the temperature was at about 60º fahrenheit. I was not sure of the exact humidity. While I was looking around on the side of the street, I spotted the Japanese knotweed. I think that it is this invasive species because of the similar characteristics it carries. The Japanese knotweed’s characteristics are in the following sentences. It’s stem is jointed, just like the plant that I found, and is wooden and about 2 cm thick. When I found the plants, they were about 1 meter high, and were light brown and went into red as the stem led into the leaves. The leaves were approx. 20 cm wide, and 28 cm long. They were alternately arranged, with a very wide shape. I definitely believe that it is Japanese knotweed, because of the exact characteristics. There is a predator of this invasive species, but it is in Asia. There were no insects on these plants as I looked. Here are the classification characteristics of Fallopia japonica(Japanese knotweed): Kingdom: Plantae (unranked): Angiosperms (unranked): Eudicots (unranked): Core eudicots Order: Caryophyllales Family: Polygonaceae Genus: Fallopia Species: F. japonica
The leaves are widely-shaped, and are curved on the sides. They are also light green. Those are two similar characteristics of the Japanese knotweed invasive species plant.
The leaves also have an alternate leaf arrangement, like the Japanese knotweed plant. The leaves on Japanese knotweed do not seem whorled OR opposite, and definitely seem alternate, as shown in the image.
N 43.571165 °
W -70.677108 °
Sat, 2012-05-19 15:00
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