Ann. For. Res. 54(1): 57-71, 2011tool, to be used in further studies on <st<strong>ro</strong>ng>Quercus</st<strong>ro</strong>ng>spp. mycorrhizae, Cenoccocum geophilum beingthe exception of the already described morphotypeby Agerer (1987-2002).Although the number of described morphotypesis relatively high, at a specic timesnapshot there are fewer, a<strong>ro</strong>und 14 activemorphotypes. Most frequently encountered<st<strong>ro</strong>ng>and</st<strong>ro</strong>ng> dominating mycobiont, under normal<st<strong>ro</strong>ng>and</st<strong>ro</strong>ng> stressful conditions, was Cenococcumgeophilum, a good c<st<strong>ro</strong>ng>and</st<strong>ro</strong>ng>idate for in vit<strong>ro</strong> mycorrhization<st<strong>ro</strong>ng>and</st<strong>ro</strong>ng> further acclimatization of theplantlets. However, there is a geographical <st<strong>ro</strong>ng>and</st<strong>ro</strong>ng>host dependent pattern for the association ofdifferent morphotypes, as our study reveals. 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