Invasive SpeciesGlossy buckthorn

Frangula alnus
FOUND by 2018csophieb
Falmouth Maine
ID Confirmed
Quality checked by Wilson
Peer reviewed by Coco X
Field Notes
On Thursday, October 4th, my class, and three other classes went to Mackworth Island in Falmouth, Maine to identify different native and invasive species in the area. Part of the trip was to walk around the island identify specific upland invasive species. The species we were assigned to find were Asian Bittersweet, Giant knotweed, Japanese barberry, Morrow’s honeysuckle, glossy buckthorn, multiflora rose, and phragmites. On Thursday it was around 60º F and a little windy (it was windier on the beach). The sky was covered in clouds and there wasn’t a single sun ray for miles. The ground was a little moist because the sun hadn’t dried the dew yet. We didn’t really have a specific way of searching for species, so as we walked the trails we just looked around for our species. I was looking for Glossy buckthorn which was more difficult to find than I thought. Luckily, as we were walking we found a small sprout right next to the trail. The other people in my group were just as lucky as me because they found their species as well. The easiest to find was Asian bittersweet and Japanese barberry by far. Both of these invasive species were densely growing all around the island. We could find them almost everywhere we looked. I couldn’t really tell the affect Japanese barberry was having on natives but it was taking up a lot of space. This could eventually affect natives. On the other hand, I could definitely see that Asian bittersweet was affecting natives. The strong vines were tightly wrapped around many trees. As a result, many trees have died. My species, glossy buckthorn, didn’t really seem to be having much effect on the native species because as I said before it was hard to find and when I did it was a small sprout that wasn’t fully grown.
Supporting Evidence
Photo of my evidence.
This is glossy buckthorn because as you can see in the photo the leaves are dark green and glossy with wavy edges. The wavy edges are very important because glossy buckthorn is commonly confused with common buckthorn which has serrated edges (not wavy).
Photo of my evidence.
The stem is thin and gray-brown with raised white pores. The white pores are a key part of glossy buckthorn because not many other species in the area have stems with bright white pores.
Photo of my evidence.
This plant like glossy buckthorn has branches that grow off the main stem alternately. The branches are also growing diagonally (when longer they will become horizontal) like glossy buckthorn branches.
Species Observation: Species Looked For
Did you find it?: 
I think I found it
Scientific name:
Frangula alnus
Common name:
Glossy buckthorn
Sampling method: 
Just looking around
Photo of our sampling method.
Place Studied
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Map this species
N 43.690800 °
W -70.227600 °
Observation Site Information
A photo of our study site.
Upland - Forest
Trip Information
2018 Mackworth Upland
Trip date: 
Thu, 2018-10-04 15:06
Town or city: 
Falmouth Maine
Type of investigation: 
Species Survey


Looks like the infestation is just starting.