New and rare adventive species of vascular plants in the Kuril Islands.
The paper provides data on the new findings and distribution of 12 alien vascular plant species discovered by the authors in 2019 on Iturup and Urup (the Kuril Islands). Medicago lupulina is a new species to the Kuril Islands and the second finding in the Sakhalin Region. Tripleurospermum inodorum is a new alien species to the flora of Iturup Island. For the first time, four alien species (Anthoxanthum odoratum, Fallopia convolvulus, Rhinanthus minor, Veronica chamaedrys) were recorded on Urup Island. In addition, new localities of alien species of rare occurrence on the Kuril Islands (Achillea millefolium, Bromopsis inermis, Galeopsis bifida, Pilosella aurantiaca, Plantago major) were found.