If my IDs are correct (there is always a possibility that they are not!), there are three species of Racomitrium moss in the Boggy Brae garden. All of them are growing on stone of some kind.
The first one is probably the easiest one to get to know: Racomitrium lanuginosum (Woolly Fringe-moss). The photo below was taken on 17 August 2014 when the moss, on a drystone wall, was showing off its ‘woolliness’ to best effect.
Yesterday it was looking decidedly soggy, like everything else!
The second Racomitrium, or Fringe-moss, I also found in August 2014: Racomitrium fasciculare (Green Mountain Fringe-moss). There’s lot of this one, both on the same drystone wall as R.lanuginosum and on various other rocks around the garden. It’s on the right on the second photo.
The third species is Racomitrium aciculare (Yellow Fringe-moss). This English name helped me realise why the Green Mountain one was named as it is though as you can see in the photos above, R.fasciculare often looks quite yellowish too! R.aciculare below has blunter leaves. It is the right-hand moss in the photo and, as can be seen, it is growing on brick.
Even if my IDs are incorrect, these are three different mosses out of a list, so far, of fifty-eight that I’ve found in the garden.