Invasive SpeciesOriental bittersweet

Celastrus orbiculatus
FOUND by Lam
ID Questioned
Quality checked by Jasmine D.
Peer reviewed by
Field Notes
It was a sunny and warm day with a light breeze. My group and I saw many different plants with different shapes, colors, and sizes. We heard birds chirping and smelt fresh air. We were surprised by what we found because it was hidden in the shade with other species of plants. We were happy because we found the species that we were looking for, we were having some issues identifying it because many leaves looked similar on other plants.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
The leaf is approximately three centimeters long.
Photo of my evidence.
The leaf is fined toothed around the edges, and comes to a point. Its body is oval shaped.
Photo of my evidence.
The plant is growing out from the fence it intertwines between them.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Celastrus orbiculatus
Common name:
Oriental bittersweet
Count of individuals: 
Vegetative structures (plants)
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.493855 °
W -70.472304 °
Observation Site Information
A photo of our study site.
Upland - Field
Trip Information
BHS Woods
Trip date: 
Tue, 2013-05-07 12:00
Town or city: 
Type of investigation: 
Species and Habitat Survey
Habitat Observations
Species diversity: 
Evidence of vectors: 
Tree canopy cover: 
3/4 - Completely covered
Soil moisture: 


I think your sketch is really great, but it's hard to tell from your evidence photos what you're looking at. In the 3rd photo I see something that looks like a vine growing in the fence, but I thought for a second the plant in the foreground was barberry... Then I looked closer, and found it hard to tell...

I think if you can it might be worth going out and getting a few more evidence photos to clarify what plant you are looking at and what makes you confident that it's bittersweet. Today would be a perfect day to do that since it's 70 degrees and sunny :)


We liked your information, but we think you could have had a better back round. For example a white sheet of printer paper. It was good that you used a ruler that gave us a better sense of the size of the leaf.