Fásra
In this typically sparse wall community, Asplenium ruta-muraria is the sole constant species. This is frequently accompanied by Asplenium trichomanes and tangled patches of the non-native Cymbalaria muralis. Occasional associates include another calcicole fern, Phyllitis scolopendrium and patches of the mosses Tortula muralis and Tortella tortuosa. Another non-native, Centranthus ruber, which favours wall tops, may also occur.
Éiceolaíocht
This is a familiar community that grows in dry crevices of lime mortar on lowland stone or brick walls
Fo-phobail
No sub-communities are described.
Pobail chosúla
The same suite of calcicole ferns can occur in the RH1A crevice community and the RH1B pavement community. Those assemblages are much more species-rich, however, with higher bryophyte cover, and Cymbalaria does not occur in them.
Luach caomhnaithe
Vegetation corresponding to this community is typically of relatively low conservation value.
Bainistíocht
This community does not require management.