Invasive SpeciesOriental bittersweet

Celastrus orbiculatus
FOUND by mustachedbluebe...
Cape Elizabeth
ID Confirmed
Quality checked by gardenerguy
Peer reviewed by
Field Notes
Day one of our experiment we tried to find Oriental bittersweet (Celastrus Obriculatus). We are sure that we’ve located bittersweet, and we are almost positive it’s Oriental Bittersweet, but there is a small possibility that it may be American Bittersweet. The two are easily mistaken because they are very similar with only subtle variations. Our location was next to the school sports field and near a residential neighborhood. Our specimen was growing on a pile of large loose rocks. Bitter Sweet has a massive root system, that is probably what enabled it to grow where it did. The day was cold and blustery and there was gray overcast looming in the sky. It grew in several small isolated clusters that were low to the ground (observe that a few meters away from our quadrat there was more Bittersweet up high in a dense thicket.) On our second day of the observation it was 49ºf. It had rained the night before so the ground and the air was still rather damp and the air still had a nip to it. The trip to see our plant was always around, 9:00-9:30am so our minds were sharp for observation. We wrote down some notes and gathered more pictures. Once we got all of our information we proceeded to make an outline of how we were to create our website page. We are almost positive that we found our plant because on an American Bittersweet the skin is orange and on an Oriental the skin in yellow. On our plant the skin was very yellow. Also the leaves were a glossy green with long pointed tip. The stem seemed older, round and bumpy, just like the species card stated. We are positive now that our plant is Oriental Bittersweet.
A sketch of our study site.
Supporting Evidence
Photo of my evidence.
We are positive that we found Oriental Bittersweet because, in this photo the skin around the berries is a bright yellow. On American BitterSweet (another type of native bittersweet that is similar to the invasive Oriental Bittersweet) the skin is an orange. This is proof that out plant is indeed Oriental Bittersweet. It also says on species card, that the leaves alternate off of the stem which you can clearly see in the photograph above.
Photo of my evidence.
This picture proves how the leaves are glossy and are rounded with toothed edges and a very long tip, just like it said in the species card. *Note that this was a couple feet away from our quadrat, but it is the same kind of plant.* If you choose to go looking for this plant your self (you shouldn't have a problem finding it) know that the leaves are supposed to be between 5-13cm in length.
Photo of my evidence.
In this photo it shows the color of the berry's skin (yellow). It also shows the measurement of the bittersweet berry. This berry is not out of it's skin, so it proves that is is oriental because of the bright yellow color, instead of the orange color like the American Bittersweet. The measurement is approximately one centimeter. These are all identifying qualities of Oriental Bittersweet.
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 43.593056 °
W -70.231944 °
Observation Site Information
A photo of our study site.
Upland - Developed areas
Trip Information
CEMS School Grounds
Trip date: 
Tue, 2011-10-18 08:50
Town or city: 
Cape Elizabeth
Type of investigation: 
Species Survey
Eastern Coastal


Your supporting evidence photo is wonderful. A really gorgeous color palette.

Very nice drawing also!.

I want to see more from mustachedblueberryturkeywolves!



thanks dna we will try to do more pages but can't make any promises!
Thanks for the wonderful comments, it is really appreciated :)

your 2 nice

I just looked at a ton of other pages about oriental bittersweet and ours in my opinion is still by far the best and we're in the 8th grade.

good pics

this is the best site ever

Thanks everyone for the nice comments <3

Ah this is great!! wonderful pictures and information to back them up, you sure go me convinced this was the bittersweet. Oh, and I also liked how you worded your evidence, it flows nice and just sounds good :)

thanks you are awesome who ever you are

Thank you so much, our hard work payed off great in the end!



awesome :))

awesome :))

You have nice and informative pictures

Thank you!

I luv it <3

I know you do

I luv yours to ^^

Oh and in that picture with out quadrat that is my hand c: I HAVE A FAMOUS HAND!! *0*

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