Invasive SpeciesOriental bittersweet

Celastrus orbiculatus
FOUND by sandiegochannel5news
Cape Elizabeth
ID Confirmed
Quality checked by gardenerguy
Peer reviewed by allnighters
Field Notes
The day is overcast and warm with a strong breeze. As we strolled along the perimeter of the fenced in area, we came across piles and piles of plants with red and yellow berries. This was Oriental Bittersweet, an invasive species which was clearly spreading quickly across the area. It was spread out over 14 meters. There were much more berries than leaves. The leaves were rigid on the edges, smooth and curved. The leaves also had lots of brown spots on them, as if they were dying. When we attempted to place our one meter square over a bunch of the plants, it wouldn’t fit. Therefore, the bunch was more than one square meter. This plant was apparently becoming a problem with its invasion.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
These berries helped us to prove that this plant was in fact Oriental Bittersweet. The berries were very colorful and pretty. It appeared as if the red berries had 'hatched' out of the yellow shells.
Photo of my evidence.
The berries on this plant far outnumbered the leaves, but this vine purely consisted of leaves. The ends of the leaves were jagged, but the top part was very smooth. We found it interesting that the berries and leaves grew on separate vines.
Photo of my evidence.
This collection of Bittersweet was further down the rocky hill than the first batch. It was mostly made up of yellow berries, rather than red. We believed that this bunch may have spread after the higher bunch due to the fact that most of its berries were still yellow, unlike the other berries.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Celastrus orbiculatus
Common name:
Oriental bittersweet
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
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Map this species
N 43.593075 °
W -70.232054 °
Observation Site Information
A photo of our study site.
Upland - Field
Trip Information
CEMS School Grounds 2012
Trip date: 
Mon, 2012-10-15 08:34
Town or city: 
Cape Elizabeth
Type of investigation: 
Species Survey


What an astounding amount of fruit. How do you think that contributes to this vines invasive nature?

Great evidence!

nice sketch!!