A list of 32 threatened species was compiled on the basis of field investigations conducted during 1980-1989 in the Kraków province. Stability of particular species presence was considered together with the literature ...

The present report describes changes in the species composition of the segetal flora during 143 years of geobotanical research. The analysis is based on historical sources of information and the author presents floristic ...

List of 42 endangered and segetal species occurring in the Konin Industrial District is presented. Relations between the strong and fast industrialization of the Konin Region and changes in segetal flora composition are ...

The first part of the present study contains short pieces of information on the Sieradz Province, its physico-geographic regionalization, geobotanic division, idaphic and climatic conditions. The second part discusses ...

Misopates orontium is rarely observed in segetal communities of our country, including Central Poland. Its localities of small surface areas and low abundances are most frequently recorded. It is them that are most ...

1367 phytosociological relevés from 1982-1989 and 1992-1993 present the distribution of selected segetal species in the mesoregion of the Krayna Lakeland. Additionally, information concerning their spread, sort of habitats, ...

Presented are the significant morphological features of small oat (Avena strigosa Schreb.) that should enable proper distinguishing this species from other oats. The morphological observations were based on herbarial ...

The obtained results indicate very distinct changes in the trends. They include quantitative changes expressed by a definite superiority of species that in the discussed period decreased their degree of spreading. ...

The paper presents results of a study on the occurrence and localization of 30 field weed species in middle-eastern Poland. The species are considered to be regionally and overregionally rare and most of them grow ...