A new Asphodelus ramosus-dominated association from the Murge Plateau (SE Italy)

Abstract The plant communities dominated by Asphodelus ramosus are quite common in the Mediterranean Basin, especially in the most degraded vegetation stages caused by grazing and fires. The aim of this paper is to provide a phytosociological description of the Asphodelus ramosus-dominated plant community of the Murge Plateau, in southeastern Italy, through 28 phytosociological relevés. Cluster analysis (flexible Beta method) and ordination (non-metric multidimentional scaling) were used to compare this plant community with other dry grassland associations in the same area and with other Asphodelus ramosus-dominated plant communities from Italy and western Balkans. The results allowed the description of a new association for the Murge Plateau: the Gelasio columnae-Asphodeletum ramosi. The new association has been tentatively classified in the alliance Hippocrepido glaucae-Stipion austroitalicae (Scorzoneretalia villosae order), because of the presence of several species typical of this alliance, although it is intermediate between this alliance and the more thermophilous vegetation of the Lygeo sparti-Stipetea tenacissimae class.