Mediterranean multi-layered alluvial forests with Populus alba, Fraxinus angustifolia, Ulmus minor, Salix alba, Salix spp., Alnus spp., lianas and often species of the Quercetalia ilicis. Populus alba, usually dominant in height, may be absent or sparse in some associations which are then dominated by Fraxinus angustifolia, Ulmus minor and/or Salix spp.
Riparian galleries dominated by tall Fraxinus angustifolia, mostly characteristic of less eutrophic soils than the elm and poplar galleries, and of drier stations, with shorter inundation periods, than those occupied by poplar woods.