Usually preferring upland acid rock crevices, this specimen was actually found in a roadside wall in North Wales where it flourishes.

It is most often found in North Wales, the English lake district and in north west Scotland with just two outposts in Ireland

Roadside, Near Trefriw, North Wales 18th May 2004

Added on November 12th 2004, amended 3rd January 2006,updated 17th October 2008