This paper provides a comparison of the vascular exotic flora of Sardinia and that of the Balearic Islands. both territories belonging to the Western Mediterranean biogeographic subregion. The study has recorded 531 exotic taxa in Sardinia (18. 8% of the total flora) while 360 (19%) in the Balearic Islands; 10 are new to Sardinia (3 of which for Italy) and 29 to the Balearic Islands. https://parisnaturalfoodes.shop/product-category/ornithine/