Scientific name Aira caryophylleaPolytrichum juniperum wall community
Common name Silver Hair-grass – Juniper Haircap wall community
Community code RH2E


RH2E: Aira caryophyllea – Polytrichum juniperum wall community  RH2E map: Aira caryophyllea – Polytrichum juniperum wall community

Download full pdf synopsis: RH2E



This low-growing community of stony substrates consists mainly of the annual grass species Aira caryophyllea, Aira praecox and Vulpia bromoides. These are usually accompanied by some reasonable cover of Sedum anglicum and patchy growth of Festuca rubra, Plantago lanceolata and Sagina procumbens. Polytrichum juniperum is a constant bryophyte whilst Hypnum lacunosum is frequent.


This community has largely been recorded from the tops of stone walls constructed from some siliceous rock, sometimes where a thin loam has developed. It has also been recorded from gritty road margins and probably occurs in a more natural setting on the tops of boulders.



No sub-communities are described.


Similar communities

This is a straightforward community that is unlikely to cause confusion.

Conservation value

Vegetation corresponding to this community is typically of relatively low conservation value.



This community is essentially unmanaged.