Sur les pelouses à Thérophytes des dunes de la côte ouest de la Belgique, en particulier le Tortulo-Phleetum arenarii

The study deals with the dry grassland plant communities of the sanddunes of the western Belgian coast, in particular the Tortulo-Phleetum arenari . A description of the structure of vegetation correlated with synecology and syndynamics is given, using the Braun-Blanquet approach. The synsystematic position of the recognized entities in discussed.