Witch's Broom - Taphrina betulina

Witch's Brooms are masses of densely branched small twigs found amongst the branches of trees. Taphrina betulina affects Birch trees.  A layer of yellow asci is produced on the underside of the swollen leaves within the broom; these stunted leaves are often produced and fall before the normal leaves open. 

Some Witches' Brooms on Birch may be caused by a phytoplasma, and Taphrina betulina may be over-recorded for this species.  Witches' Broom may also be caused by physical damage

Provide photos of the host plant and close-up of gall showing evidence of fungal infection

Found on birch, particularly Downy Birch and Silver Birch

The broom growths may last for many years, typically for the life of the host plant.

Common and widespread in Britain.

Fairly frequent in Leicestershire and Rutland.