The diversity of Croatian vascular flora based on the Checklist and CROFlora database

The recently completed Checklist of Croatian Vascular Flora for the fisl lime endeavours to quantify the national vascular flora. The vascular flora numbers 5.347 taxa in all (4275 species and 1072 subspecies). According to species number per square unit, Croatia takes 3rd place in Europe in floristic richness. The three biggest families are Compositae (742), Fabaceac (458) and Poaceae (448), and the fifteen biggest families contain 77% of all species and subspecies. 447 taxa are considered threatened (8.92%), almost double the number in the last Red list. The 323 endemic taxa were registered in the categories of subendemic, endemic and narrow endemic taxa, and Bykov 's index of endemism shows that Croatia has more than the average number of endemic species in a number of Euro­ pean countries. In the best case, for 39% of all the taxa the ecological indices are known. A total of 241 taxonomically or chorologically doubtful taxa have been registered, together with 343 taxa in cultivation, and 120 naturalised taxa. The Checklist contains 7673 invalid names, mostly synonyms, and the database currently 11407.