Özet:

Research area in Adıyaman (Turkey) is the Gazihan Dede promenade area. This study was conducted between 2017-2018. As a result of the study, a total of 297 taxa belonging to 55 families, 178 genera, 223 species, 54 subspecies and 20 varieties were determined. 12 of these taxa are endemic and the endemism rate is 4.04%. The distribution of the taxa in the research area to the phytogeographical regions is as follows; Irano-Turanian 88 taxa (29.6%), Mediterranean (including Eastern Mediterranean) 43 taxa (14.5%), Euro-Siberian 18 taxa (6.1%), 60 taxa (20.2%) with a wide distribution and 88 unclear taxa (29.6%). In terms of the number of taxa in the research area, the largest families are respectively; Asteraceae (43), Fabaceae (27), Lamiaceae (27) and Poaceae (20). The largest genera in terms of the number of taxa in the research area are; Inula (8), Euphorbia (7), Scabiosa (6), and Hypericum (5). Life forms of taxa; 160 (53.88%) taxa hemicryptophytes, 80 (26.94%) taxa therophytes 19 (6.40%) taxa nanofhanerophytes, 18 (6.06%) taxa geophytes, 16 (5.39%) taxa chamaephytes 2 (0.67%) taxa mesofhanerophytes, 1 (0.33%) taxon is microfhanerophyte and 1 (0.33%) taxon is vascular parasite.

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