Distribution, ecology and conservation survey on Trifolium michelianum Savi (Fabaceae) in Sicily (Italy)

摘要: We report the identification of four residual stations for Trifolium michelianum Savi (Fabaceae) in Sicily, whereas species was documented to be extinct at Gorgo Cerro station (western Sicily), only locality previously reported literature. In addition an update on distribution species, a survey new Sicilian populations led their biological, ecological and phytosociological characterization, as well assessment risk factors. The here relegated limit its area, occurs particularly sensitive vulnerable environments, such “Mediterranean temporary ponds”, considered “priority” by Council Directive 92/43/EEC. Moreover, association (Trifolio micheliani–Glycerietumspicatae ass. nova), framed alliance Glycerio-Sparganion (class Phragmito-Magnocaricetea), is described.