Thread rush meadows

Humid and wet meadows of sub-Atlantic Europe dominated by or rich in [Juncus filiformis], or, in Iceland, [Juncus balticus] ([Juncus arcticus]), often accompanied by [Carex nigra], [Carex echinata], [Molinia caerulea], [Potentilla erecta], mostly developed on lime-poor soils, of strong boreal affinities, most characteristic of Fennoscandia, Iceland, the northern Germano-Baltic plain and the neighbouring Hercynian ranges, rare farther south, limited to small surfaces in cold-pocket areas of the greater Hercynian ranges and the pre-Alps.