Abstract
The Author has watched statistically the weeds of the coltures with a triennial rotation in a ground of Alta Lunigiana (Massa-Carrara) where the climate is rather mild with a great quantity of rain for annum; therefore he made a comparison between the weeds studied by some other authors noticing remarkable differences especially regarding to Bari's weeds. Finally the Author mode a phytogeographycal analysis classifing the principal weeds following Eig's methode.

This publication has 6 references indexed in Scilit: