Number of “diagnostic” and “constant” species, among those identified in this study, in the different habitats reported in the EUNIS factsheets lists (only habitats containing diagnostic species are reported in the histogram) . Q42: Extremely rich moss-sedge fen; Q41: Alkaline, calcareous, carbonate-rich small-sedge spring fen; Q23: Relict mire of Mediterranean mountains; Q45: Arctic-alpine rich fen; Q43: Tall-sedge base-rich fen; Q46: Carpathian travertine fen with halophytes; R1S: Heavy-metal grassland in Western and Central Europe; Q24: Intermediate fen and soft-water spring mire; T12: Alnus glutinosa-Alnus incana forest on riparian and mineral soils; T15: Broadleaved swamp forest on non-acid peat; N1A: Atlantic and Baltic coastal dune scrub; N1D: Atlantic and Baltic broad-leaved coastal dune forest; T3J: Pinus and Larix mire forest; U3D: Wet inland cliff; S11: Shrub tundra; S12: Moss and lichen tundra; U32: Temperate high-mountain siliceous inland cliff.