Photo 2862001, (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 What Butternut Canker (Ophiognomonia clavigignenti-juglandacearum) Observer owenclarkin Date November 20, 2011 09:41 AM EST Place North Russell, Ontario (Google, OSM) Date Added January 9, 2016 02:11 PM EST Description bad case of canker on young Juglans cinerea 2 IDs Research Grade View Sizes small medium large original