Rzadkie gatunki chwastów polnych na Nizinie Południowopodlaskiej i terenach przyległych

Abstract

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 on fertile soil (rendsine, alluvial soil). They include naturally rare species or species occurring on the border of geographical ranges (Anagallis arvensis var. azurea, Aphanes arvensis, Nigella arvensis) as well as species which are close to extinction (Bromus secatinus, Digitaria sanguinalis, Lolium remotum, Sherardia arvensis, Silene noctíflora). A group of important role are also expansive species talcing possession of habitats they have never grown in before (Asperugo procumhens, Falcaría vulgaris, Lathyrus tuberosus, Vicia grandiflora). Besides the list of localities (by provinces) general characteristics of distribution of each species and abundance and dynamic tolerance of localities are given.