Exidia thuretiana (Lev.) Fr. White Brain Fungus. The fruit bodies are opalescent white blobs sometimes fusing together to form a longer strip, the colour may have a hint of blue or pink, normally about 2 cm long but can be up to 10cm, It is marked with indentations looking like rivers on a map, as it dries it forms a transparent membranous film. Spores cylindrical 13-18x5.5-7. Found on fallen twigs of Beech and sometimes Ash , it can be found at any time but more common in late autumn through to early spring. Found in Europe and Africa not recorded for North America. Not edible. Many thanks to Miroslaw Wantoch-Rekowski who sent me the pictures from Poland.