Grey cushion moss - Grimmia pulvinata

Grey cushion moss - Grimmia pulvinata

Observation - Grey cushion moss - Grimmia pulvinata . Description: I saw this little grey and hairy cushion moss, about 20mm in diameter, growing on the side of a concrete wall. Having compared what I saw with observations on this site I think it must be Grimmia pulvinata. On top of the wall there are smaller patches m

I saw this little grey and hairy cushion moss, about 20mm in diameter, growing on the side of a concrete wall. Having compared what I saw with observations on this site I think it must be Grimmia pulvinata.
On top of the wall there are smaller patches mostly covered by lichen, but where the hair-tipped leaves are much greener.