Flame Shield (Pluteus aurantiorugosus)
In Britain P. aurantiorugosus is now an uncommon find and is primarily restricted to southern England and south Wales. It occurs mainly on rotting broadleaf stumps and large logs of buried hardwood timber. The above specimens were recently found and photographed in a hollow cavity within a heavily decayed beech; the cap of the single specimen about the size of a pea. This striking species can appear at any time from early summer right through to the end of autumn providing the weather is mild.
Certainly one to look out for …
Buczacki, S., Shields, C. and Ovenden, D. (2012). Collins Fungi Guide: The most complete field guide to the mushrooms and toadstools of Britain & Ireland. London: HarperCollins, p. 254, fig. p. 255.