Theses tables are extracted from James,P.W., Hawksworth,D.L. & Rose, F. (1977) Lichen communities in the British Isles: a preliminary conspectus. In: Lichen Ecology (ed. M.R.D.Seaward): 295-413. Academic Press, London.
which is in the public domain and can be downloaded from the British Lichen Society page Indices of Ecological Continuity for Woodland Epiphytic Lichen Habitats
Old forest Indicator Species
Pseudervenion furfuraccea community
Xanthorion parietinae
Physcietum ascedentis
Teleoschietetum flavicantis
