Included here is a zone along the southern part of the Black Sea most of which is in Turkey but extends west along the Black Sea shores of Bulgaria as far as the Gulf of Burgas. This part has been described as the Euxinic zone. In the east it includes the western Caucasus in western Georgia and the coastal zone as far north as Tuapse. This is the so-called Colchic zone.
Of the endemic and near endemic vascular plants so far recorded there are about 363 species in 162 genera and 60 families. There are 5 endemic genera (marked red) but no endemic families.
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