Invasive melliferous plants in the flora of Serbia

The study of invasive plant species occupies a lot of researchers all over the world, because this category of plants is one of the more important factors of endangering native flora of specific area. In the flora of Serbia, presence of invasive plants, disturbs, primarily, composition of vegetation and bipolar character of life forms. In this paper we are, especially, pointing out the species which are pollinated by bees, wanting to emphasize that besides already known ways of spreading invasive species, insufficient knowledge of their biology and ecology, can become a focus and a new way of spreading some species, such as Robina pseudacacia, Amorpha fruticosa, Syphyotrichum lanceolatum and Asclepias syriaca, since they are well-known melliferous plants.