摘要：Meadows of lowland and upland areas of Vlasina Plain represent a significant natural plant resource.A botanical study of the Vlasina Plain region conducted by RANĐELOVIĆ (2002) identifies four lowland meadow communities (ass.Equiseto-Scirpetum xilvaticae Šegulja,ass.Polygono-Scirpetum xilvaticae Schw.,ass.Brachythecio-Menthetum longifoliae V.Rand.and ass.Deschampsietum caespitosae H-ić.) and six phytocoenoses of hilly-mountainous meadows and pastures (ass.Diantho-Armerietum rumelicae N.Rand.,ass.Festuco nigre.icenti-Nardetum strictae N.Rand.,ass.Lino-Nardetum strictae Rexp.et N.Rand.,ass.Thymo-Poetum violaceae Mic.,ass.Festucetum paniculatae Horv.and ass.Centattrio-Festucetum validate N.Rand.).Besides identifying the weed species that participate in the grassland communities of Vlasina Plain,this study deals with all relevant parameters concerning that particular plant category,including primarily: taxonomic analysis,quantitative representation in certain grassland communities,life forms (biological spectrum),phyto-geographical characteristics (floral elements),ecological and biological features and categorization according to their harmful effect (very poisonous,weakly poisonous and useless species).This first brief report contains data on the weed flora of meadows and pastures of Vlasina Plain,while the main subject of a second communication (in preparation) would be focused on detailed analysis of weed species in the region,their biological characteristics and specific features.
关键词：meadow and pasture plant communities;Vlasina Plain;grassland weeds;floristic composition;quantitative representation
