Thursday, 13 November 2014
Trichostomum brachydontium on a wall top
On my way to a meeting in Brecon today I stopped in a lay-by on the A470 at Abercanaid to spend a few minutes recording bryophytes. There was a small section of mortared wall bearing a plaque, which supported the usual wall-top suspects but also Fissidens dubius on the shaded side of the wall and, more surprising to me, a small patch of what I'm fairly sure is Trichostomum brachydontium on mortar on the wall top. The Carms and Pembs floras don't seem to mention walls as a habitat for this species, but I note Barry has recorded it from limestone walls on Gower. In this case the wall wasn't calcareous but the mortar was obviously to its liking.