Photo 3112453, (c) Owen Clarkin, some rights reserved (CC BY-NC), uploaded by Owen Clarkin

Attribution © Owen Clarkin some rights reserved Uploaded by owenclarkin Source iNaturalist Associated observations Photos / Sounds 2 photos What Alder Buckthorn (Frangula alnus) Observer owenclarkin Date June 6, 2014 Place Ottawa, Ontario, CA (Google, OSM) Date Added December 27, 2015 10:48 PM EST Description Ubiquitous invasive small tree 3 IDs Research Grade View Sizes small medium large original