Several semicircular brackets about 10cm across on a fallen dead branch, possibly birch.Pores are elongated.
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: 51.938, -0.6696
OS grid ref: SP915274
Heath Wood off the Old Linslade Road.