Whitish powdery coating on leaves of Oak.
Caution: Do NOT use iSpot to identify fungi to eat!
Some fungi are very poisonous so a mistaken ID could have serious consequences.
No interactions present.
Lat/Lng: 53.375238877797, -2.8791046142578
OS grid ref: SJ416868
Local Nature Reserve, woodland and grassland wildflowers, fungi, butterflies and bird life.