Invasive SpeciesOriental bittersweet

Celastrus orbiculatus
ID Confirmed
Quality checked by
Peer reviewed by
Field Notes
We are happy because we were able to identify two invasive species. We hear leaves rustling and kids yelling to each other. We smell damp forest and mud. We see lots of orange, red, and brown coloring. We are slightly surprised that we found two invasive species, and our classmates found some also. We found about eight invasive species as a class.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
The leaves that grow on the Oriental Bittersweet are found at the base of the tree that we looked at.
Photo of my evidence.
There are berries on the tree in the woods, and there is also the same type of berries on the Oriental Bittersweet.
Photo of my evidence.
There are climbing vines on the tree and they look the same as we know the Bittersweet's do.
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: 
Sampling method: 
Quadrat (user-placement)
Photo of our sampling method.
Place Studied
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Map this species
N 43.145110 °
W -70.660550 °
Observation Site Information
A photo of our study site.
Upland - Forest
Trip Information
York Upland - YMS
Trip date: 
Mon, 2009-10-19 13:00
Town or city: 
Type of investigation: 
Species and Habitat Survey
Portsmouth Harbor


You guys had some good perspective shots. On the downside your information needs some work. I am not convinced you found what you thought you did.

Hey there,

Did you feel the climbing vines? Did they have thorny bumps? That's often a great way to confirm that you did find oriental bittersweet.

Your leaf picture looks really cool... nice negative space.


Yes we did, it was very bumpy but not thorny. Thanks for the heads up!
Thank you

Our group here at Massabesic Middle, thought we found Oriental Bittersweet, but we proved that it wasn't. We were looking at your photos, and thought that the picture of the vine climbing up the tree was pretty interesting!

Thank you!


Thankx for the comment, We are looking forward to seeing your new finds! =]