This study is a result of many years researches into segetal weeds of the Częstochowa Upland. Its aim is to characterize the natural conditions of the research region and to compile a list of threatened species of the ...

The subject of the researches whose results are presented in this paper was segetal vegetation that can be found in grain and root agricultures of the following districts: Błażowa, Boguchwała, Grodzisko Dolne, Krasne, ...