This alliance includes inland continental brackish marshes of vernal pools or shallow water bodies dominated by Bolboschoenus maritimus. B. planiculmis and Schoenoplectus tabernaemontani. It occurs in depressions, ditches and channels in areas with base-rich bedrock or near mineral springs. During dry summers the water table continuously decreases and eventually the habitat can dry out. The vegetation types assigned to this alliance are distributed in warm and dry areas of central and eastern Europe, especially in the Pannonian Basin.