Juniperus Sabina L. in Val di Vizze e in Val Passiria (Alto Adige)

Summary

The author gives notice, for the first time, of the presence of Juniperus Sabina L. in the Passiria Valley (Alto Adige); she describes its distribution both in this valley and in the Vizze Valley carefully and from the comparison between the floristic composition of its phytocenoses in both valleys, she concludes that the various species living with J. Sabina are associated with it only because they find in its shrubs suitable life conditions. On the whole even for this phytocenosis, as for the others which can develope in chemically different substrata and spread in altitude remarkably, the known «companions» depend on the kind of the soil most of them belong to the flora typical of the single altitudinal belts and horizons on which the association develop unless particular local conditions permit the infiltration of some species belonging to different altitudinal belts as in one of the stations examined by the author in the Passiria Valley.