The purpose of the study is to find the effects of different growing site 16 conditions on trees with the vessel features in the woods of Quercus ilex L. growing in 17 different regions through Turkey under different site conditions, and to evaluate the 18 results in respect of forestry. A total of 102 wood samples were collected from 102 19 sampling plots (as 20 m x 10 m plots) in 9 distribution areas in Turkey. Environmental, 20 climate and stand data were obtained for each plot. Standard

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... anatomical studies 21 were performed. The results show that, while vessel element lengths are almost stable in 22 all regions, the most changeable vessel element feature is the vessel frequency in 23 different regions of Quercus Q. ilex. Hierarchical cluster analysis based on the 24 mesomorphy and xeromorphy ratios revealed that a total of 15 sites fell into Group 1 25 (14.71%-very humid), 39 sites (38.24%-humid) into Group 2 and 48 sites (47.06%-dry) 26