La flora vascolare del Monte Pelato (Colline Livornesi, Toscana)

An updated list of the vascular flora occurring in Mount Pelato is presented. The list is based on bibliographic analysis and field studies effected in the years 2010-2011. 432 specific and infraspecific taxa are reported (423 native). They belong to 260 genera and 68 families. 218 taxa are new for the area, of which 21 are new for the Leghorn province, 10 are confirmed and 3 are a second record at provincial level, 37 represent the first record for the continental portion of the province. Most represented families are Asteraceae (61 taxa), Fabaceae (59), Poaceae (52), Rosaceae (21), while the most represented genera are Trifolium (16 taxa), Vicia (8), Carex (7 taxa), Lathyrus and Medicago (6 taxa). 7 units are naturalized exotic species (about 1.6% of the flora), while casual exotic taxa are only 2. The relevance of this biotope in terms of biodiversity conservation, given the high number of phytogeographically interesting taxa (endemics, relics) and the low number of alien species is discussed, also in relation with its ophiolitic substrate