Flora segetalna Wysoczyzny Kałuszyńskiej [The segetal flora of the Kałuszyn Upland]

In the paper a state of preservation and the characteristics of flora of the cultivated fields of the Kaluszynska Upland is given. The flora of agrocenosis of the Kaluszynska Upland is rich. The presence of 278 vascular plant species was noted in the study area. It is mainly the diversity of habitats and human activity that affected its species abundance. More than a half of a number of taxa (166 species – 59,6%) belong to the group of rare, 40 of them are endangered extinction. Among the most threatened species there are 14 taxa e.g.: Fumaria schleicheri , Euphorbia exigua , Illecebrum verticillatum , Asperugo procumbens , Polycnemum arvense , Radiola linoides , Camelina sativa .