Growth on Leaf

Growth on Leaf

Observation - Growth on Leaf. Description: I found this on a walk through woodland close to a river. Unfortunately I don't even know what type of tree it came from. It looks like some kind of growth. It was on the underneath of the leaf.

I found this on a walk through woodland close to a river. Unfortunately I don't even know what type of tree it came from. It looks like some kind of growth. It was on the underneath of the leaf.