Chorological and ecological analysis of tribe Trifolieae, family Fabaceae, in the prefecture of Thessaloniki

The genera Medicago, Melilotus, Ononis, Trifolium and Trigonella, of the tribe Trifolieae, family Fabaceae, include some of the most important plants for grasslands, with great economic and ecological value. In this work, which is based on a literature review, all taxa of tribe Trifolieae of the Thessaloniki prefecture are recorded. The total number of taxa is 76 and most of them are therophytes (71.1%). The euri-mediterranean (44.8%), eurasiatic (27.6%) and steno-mediterranean (19.8%) floristic elements are the most dominant. The results of the analysis of the ecological demands of plants, show that most of the plants of the tribe have the optimum of their growth in warm sites with relatively high intensity of solar radiation with dry soils, poor in nutrient supply.