Humid grasslands of sub-Atlantic Europe submitted to a mixed regime of haycutting and grazing, in particular, single early-summer cutting followed by later prolonged grazing, occupied by a mixture of species of mesophile pastures, notably Cynosurus cristatus, Lolium perenne, Trifolium repens, and Molinietalia species resistant to changes in the exploitation regime, such as Juncus effusus, Juncus inflexus, Lychnis flos-cuculi, Cirsium palustre. These grasslands constitute transitions between mesophile grasslands of unit E2 and humid grasslands of E3.41, particularly of unit E3.414; they are also closely related to formations of unit E3.417.