This type of vegetation is found on the small sandy marly plain of Cretaccio and in the central part of the island of Pianosa. On Cretaccio, this vegetation resembles a dense lawn physionomically characterized by the predominance of common Brachypodium pinnatum after Schoenus nigricans. DE MARCO et al. (1984) considered this difficult to define grouping to be a collocation in the Crithmo-Limonietea class because of the presence of the Daucus gingidium. Other halo-tolerant species typical of other environments come into this category such as: Blackstonia perfoliata, Centaurium erythraea, Lagurus ovatus, Inula viscosa and Atriplex halimus. On Pianosa the vegetation of the halophytic grasslands is, according to CRISTOFOLINI et al. (1967), represented by species of the Salicornietalia order such as Arthrocnemum glaucum, Suaeda fruticosa, Inula crithmoides, Halimione portulacoides, Spergularia marina, mixed with sand-loving halophytic species such as Agropyron pungens, Sporobolus arenarius, Euphorbia peploides and species that grow in ruins and on cultivated land such Mercurialia annua, Lobularia maritima, Avena barbata and Heliotropium europaeum. The halo-nitrophytic vegetation, when most developed, makes up an area dominated by Lavatera arborea that characterizes the central part of the island.

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