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This study was conducted in order to investigate leaf ratios and the leaf yields of Arbutus andrachne L., Cistus creticus L., Gonocytisus angulatus L Spach., Paliurus spina-christi Mill., Phillyrea latifolia L., Phlomis armeniaca Willd., Pistacia terebinthus L., Quercus coccifera L., Quercus infectoria ssp. Boissieri O. Schwarz., and Smilax aspera L. species of obtained from research areas with different altitudes and sides. Maquis in the district of Erdemli (Mersin) in semi-arid Mediterranean region were determined as trial areas and was carried out during the period of April 2005 to April 2007. The experimental design with three different altitudes (0-400 m, 400-800 m and over 800 m) and two slope aspects (north and south) was determined according to sampling method without plot. According to the results of the study, leaf ratios of available species ranged from 10.95% to 46.18%, and the leaf yields to per plant were 0.37 kg to 12.58 kg. The highest leaf yield was obtained from Quercus infectoria ssp. Boissieri O. Schwarz. (12.58 kg) and Phillyrea latifolia L. (10.64 kg), and leaf ratio was Arbutus andrachne L. (46.18%).