Boreo-alpine acidocline snow-patch grassland and herb habitats

Snow patches of the Alps, the Pyrenees, the Carpathians (e.g. alliances [Salicion herbaceae] and [Festucion picturatae]), the Dinarides, the Rhodopides (Rila) and the Pelagonides, occupying areas free from snow for less than two months, with the herbs e.g. [Luzula alpinopilosa], [Salix herbacea], [Ligusticum mutellina]; mosses [Polytrichum sexangulare], [Polytrichum juniperinum], [Pohlia commutata], [Kiaeria falcata] ([Dicranum falcatum]), the liverwort [Anthelia juratzkana] or sometimes lichens. Also snow-patch communities of arctic and boreal mountains of Fennoscandia, the Scottish Highlands, Iceland, Greenland and other islands of the Norwegian and Greenland seas, formed of mats of mosses and lichens.