Considerazioni preliminari sui boschi a Fagus sylvatica L. e Taxus baccata L. dell'Italia peninsulare e della Sicilia

A phytosociological study of the Fagus sylvatica and Taxus baccata forests in peninsular Italy and Sicily is presented. 104 phytosociological releves were analysed, 40 of wich unpublished and 64 derived from published tables; a matrix was produced and processed by cluster analysis. The investigated woods show high floristic homogeneity and naturality. The recognised mountain zonal types are assigned to Aremonio-Fagion sylvaticae (suball. Cardamino kitaibelii-Fagenion sylvaticae) and Doronico-Fagion; submountain Adriatic mixed forests to Laburno anagyroidis-Ostryenion carpinifoliae in the order Quercetalia pubescentis; azonal communities are ascribed to Tilio platyphylli-Acerion pseudoplatani. Taxus baccata doesn't differentiate any association, but it may be considered as a good indicator of humid and eutrophic soils, in different mature forest types with large distribution area. Some associations and subassociations are therefore criticised.