Over a few years investigations on the cultivation of plants under species protection have been conducted in the Botanical Garden in Łódź. The acquired species are introduced into cultivation in localities most similar ...

The state and changes of Bydgoszcz segetal flora are described in the present paper. The segetal flora of the town comprises 242 species. 31 of these species are on the list of threatened weeds.

The occurrence and distribution of endangered, vulnerable and rare species in segetal communities of western part of the Szczecin Lowland are described. The characteristics of 1 endangered, 10 vulnerable and 4 rare species ...

3 extinct (Ex), 4 endangered (E) and 4 vulnerable (V) species of segetal weeds of recorded in south-western Poland. 11 segetal species that are included in the list of threatened segetal plants of Poland are not threatened ...

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 ...

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 ...

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, ...

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 ...

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. ...