This contribution presents the results of the floristic research carried out on Monte Perda 'e Liana, one the most characteristic Mesozoic calcareous formations of centre-eastern sardinia. The found floristic component 247 taxa that can be sscribed to 57 families and 176 genera. The endemic quota is made up of 44 species or 17,81% of the local fora mostly ascribed to the sardinian sector. The analysis of the biological forms has pointed out a high percentage of hemicryptophytes and therophytes, while the chorological spectrum has shown the dominance of steno and euri mediterranean elements
