morris173's picture

Growth on Betula pendula

Observed: 8th December 2012 By: morris173
SAM_0967
Description:

Growth on main stem of the tree

Identifications
Species interactions

No interactions present.

Species with which Inonotus obliquus interacts

Comments

chrisbrooks's picture

Birch Burl (Burr)

This is I believe just a deformity of the tree which has been caused by stress as a result of injury, virus or fungus.