Özet:

In this research, the IUCN (International Union for Conservation of Nature) red list categories of naturally distributed taxa in the Besni district of Adıyaman province, located in the Mediterranean Basin, where the Mediterranean and Iran-Anatolia hot spots intersect, were investigated by literature review. As a result, the threat categories of a total of 162 taxa belonging to 121 genera in 58 families were determined, based on IUCN criteria. Of these taxa, 73 (45%) are endemic, 14 (9%) are rare, and 75 are widely distributed plants. The distribution of these taxa according to phytogeographic regions is as follows: Iran-Turanian 71 (43.8%), Mediterranean 13 (8%), Eastern Mediterranean 13 (8%), Euro-Siberian 6 (3.7%) and unknown or widely distributed 59 (36.5%). According to IUCN criteria; there are 7 (4.3%) in CR (very endangered), 6 (3.7%) in EN (endangered), 21 (13%) in VU (vulnerable), 17 (10.5%) in NT (threatened), 104 (64.2%) in LC (least concern) and 7 taxa (4.3%) in DD (data deficient) cateories. Of these taxa, 34 taxa (20.98%) are in danger of extinction. Risk factors on taxa in the research area are largely anthropogenic in origin. In the studies conducted in the research area, it was observed that the risk factors on taxa were largely anthropo-genic in origin. Overgrazing, over-harvesting, road construction, field/orchard clearing, urbanization, defor-estation, conversion of natural habitats to recreational areas, drying of swamp areas and environmental pollution are risk factors observed on species and habitats. Campanula adiyamanensis Yıldırım & Özcan taxon is facing extinction on a global scale.