FLORA OF THE HOD VALLEY (ARTVIN, TURKEY)

This study was aimed to determine floristic content of Yukarımaden and Aşağımaden villages and their surroundings in Artvin between June and September 2015. It is located in the north-east of the Eastern Black Sea Region and is taken place in Colchic province of Euro-Siberian floristic area of Holarctic Region and lies between 400 and 2830 m. As a result of this study, total 566 plant taxa belong to 85 families and 358 genera were determined.7 of them belong to Pteridophyta, the remaining 559 taxa were Magnoliophyta which included 7 taxa from Pinidae, 1 taxa from Gnetidae and 551 taxa from Magnoliidae. The largest families recorded were as follows: Poaceae 38 taxa, Lamiaceae 38 taxa, Rosaceae 38 taxa, Asteraceae 36 taxa, Fabaceae 32 taxa, Brassicaceae 26 taxa, Caryophyllaceae 22 taxa, Boraginaceae 22 taxa, Ranunculaceae 20 taxa and Apiaceae 16 taxa. The percentage of phytogeographical origins of 227 taxa (40.1%) was determined. The distribution of the taxa according to the phytogeographical regions was as follows: 130 taxa (22.9%) Euro-Siberian, 83 taxa (14%). Irano-Turanian, 14 taxa (2.4%) Mediterranean, 339 taxa (59.9%) cosmopolit. In the study area, 57 rare plant taxa were identified, 18 of which were endemic. Endemism is 3.2% and included 18 endemic taxa. The endemic and rare non-endemic plants in the study area have been indicated to IUCN threat catagories. Also, one species has been identified under the BERN and CITES contracts in the field.