In continuation of his study on the Elevation Effect in the Swiss mountain flora, Mr. W. Backhuys has also undertaken an analysis of the subalpine species of Taraxacum in Switzerland which have been just revised by the expert on this group, Prof. Dr. J.L. van Soest. This is a valuable addition, as the Taraxacums have all the same means of dispersal, viz. by wind through their plumes and show in this respect an important homogeneity.