Phytosociological studies in the British heath formation I. Heaths of the Ulicetalia minoris (P. Duvign. 1944) J. M. Géhu 1973
Bridgewater, P. B.
The syntaxonomy of British heaths of the order Ulicetalia minoris is discussed. Climatic climax heaths of the alliance Dactylo-Ulicion occur widely in western Britain, and the new associations Genisto maritimae-Ericetum cinereae, Anthyllido corbirei-Ericetum cinereae are described. The British distribution of Ulici (europaei) maritimi-Ericetum cinereae is confined to Cornwall, whilst that of the Ulici (gallii) humilis-Ericetum cinereae (as the new sub-association holocetum) is from Cornwall to the Isle of Man. Heaths of humid (mesophilous) environments in southern Britain belong to the Ulici-Ericion ciliaris. New associations described from this alliance are the Ulici gallii-Ericetum vagantis (confined to the Lizard peninsula, Cornwall), Agrostio setaceae-Ulicetum minoris (western mesophilous heaths on sands and gravel) and Agrostio setaceae-Ulicetum minoris (an eastern vicariant). Both the Ulici gallii-Ericetum ciliaris and Ulici minoris-Ericetum ciliaris also occur in Britain, but in very localised areas of Cornwall and Dorset. Dry heaths belong to the Ulici-Ericion cinereae, and this is represented by two associations: Ulici gallii-Ericetum cinereae (western Britain) and Ulici minoris-Ericetum cinereae (south-eastern Britain). Two new subassociations are described for these associations.