The paper presents the diversity of plant communities from Agropyretea intermedio-repentis class in Szczecin (Poland) and their connections with different types of urban landscape. The following six communities are characterised: associations Convolvulo arvensis-Agropyretum repentis, Convolvulo-Brometum carinati and Convolvulo-Brometum inermis, and communities with Cirsium arvense, with Calamagrostis epigejos and with Saponaria officinalis. The communities are expansive especially in areas with low-density development and a large proportion of open space. Showing a low species diversity, retarding succession, and having poor recreational and esthetic value, these communities adversely affect urban space. A sole positive contribution to the urban landscape is through their rapid growth on wastelands, which, however, in the longer term makes it difficult to replace them with cultivated plant cover.

47-60