Ecological and Phytogeographic Characteristics of the Weed Flora of Mirijevo

A total of 228 species of vascular plants from 159 genera and 44 families were found in various types of weed flora of Mirijevo (NE Belgrade). The results represent analysis from floristic, ecological and phytogeographical aspects. An analysis of life forms in the weed flora of Mirijevo showed that hemicryptophytes were dominant (47.81%), with summer-blooming, mostly tall and scapose hemicryptophytes and biannual and caespitose forms prevailing. Among therophytes, which accounted for 34.21%, a significant increase in the number of spring species and lower categories of growth was observed, which may be interpreted as a result of their annual character, i.e. a need to complete their life cycle (seed-to-seed) within a single vegetation season. The phytogeographical analysis of the weed flora of Mirijevo revealed the presence of 135 different floristic elements grouped into 7 main area types. The largest group includes 131 species of the Holarctic area type (57.46%), with a domination of European-West Asian and Eurasian species, which is similar to the phytogeographic structure of the ruderal flora of Belgrade and Serbia