Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
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I have noticed this thing growing on branches of my apple tree. Is it good or bad for the apple tree? The branches don't look really healthy, though.
Probably a species of Physcia, but difficult to see detail. It isn't any threat to the tree, but may it benefit if the bark of the tree is not growing well.
is it not just a burr which has formed where the tree has been injured or damaged? Although this could have been initiated by a fungal pathogen following damage to the trunk.
Lat/Lng: 51.4, -0.3
OS grid ref: TQ2469