Invasive SpeciesGlossy buckthorn

Frangula alnus
NOT FOUND by 2018cat
Falmouth Maine
ID Confirmed
Quality checked by Bea Babb
Peer reviewed by
Field Notes
On Thursday, October 4, 2018, Mr. Wilson’s osprey science classes went to Mackworth Island. The temperature was 61° fahrenheit with a 30-40% chance of rain later in the day. The time was around 11:30 am and the climate was wet and windy. There were 7 groups in total searching throughout the island. Each group had free range as long as they stayed on or near the trails. The two most prominent species in the area was oriental bittersweet and japanese barberry. The bittersweet vines climbed up the trees and the barberry lined almost all parts of the path. My invasive species, glossy buckthorn, was not as prominent on Mackworth Island as it was behind the Falmouth Middle School. Only one person in my class found the plant, and even then it was tiny. Only one sprout with 3 leaves and no berries. The closest species that I found is shown below. Although there are small amounts in the area, the plant could spread very fast because the plant is on the island.
Supporting Evidence
Photo of my evidence.
The leaves are not glossy and are spade-shaped with serrated edges.
Photo of my evidence.
The stem is brown with no white pores and small flower buds.
Photo of my evidence.
There are no seasonal berries on the plant and the bush is thick with many branches.
Species Observation: Species Looked For
Did you find it?: 
I think I did not find 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 43.640300 °
W -70.226000 °
Observation Site Information
A photo of our study site.
Coastal - Rocky intertidal
Trip Information
2018 Mackworth Upland
Trip date: 
Thu, 2018-10-04 15:06
Town or city: 
Falmouth Maine
Type of investigation: 
Species Survey


Your coordinates put you in South Portland. Please post updated coordinates here in the comments so we can get your in the right spot on the map.

Thank you,
-The VS Team

That plant is Quaking Aspen or Populus tremuloides. It is a very important native tree species which comes in after a fire or cutting. It is great food for deer, grouse and others.