Position re. silver birch - 2 mature clumps

Position re. silver birch - 2 mature clumps

Observation - Position re. silver birch - 2 mature clumps - UK and Ireland. Description: The main clump of juveniles appeared very rapidly ca. 1/11/2012. The mature clump is ca. 1 week later. They appeared under a mature silver birch tree in my garden - I haven't seen this sort of clump of caps in previous years. A spore print from a m

The main clump of juveniles appeared very rapidly ca. 1/11/2012. The mature clump is ca. 1 week later. They appeared under a mature silver birch tree in my garden - I haven't seen this sort of clump of caps in previous years.

A spore print from a mature cap produced very pale yellow spores - almost white.