Diseased Hazel?

Diseased Hazel?

Observation - Diseased Hazel?. Description: A hazel near Curbar, Derbyshire. The branches end in a few normal hazel leaves and a bunch of what are to me at least, atypical, leaves. Is this caused by a parasite or fungal infection or just a variation on normal? I wonder if something interesting wi

A hazel near Curbar, Derbyshire. The branches end in a few normal hazel leaves and a bunch of what are to me at least, atypical, leaves. Is this caused by a parasite or fungal infection or just a variation on normal? I wonder if something interesting will develop later in the year?