New records of non-native vascular plant taxa from Iceland

15 new taxa of non-native vascular plants were recorded in Iceland (during the last five years: 2013-2017). Here, the most important data on first records were described: including exact location, herbarium voucher, collector name and comments summarising some more important details. Each newly recorded species was described in terms of its status (casual vs. naturalised alien) and impact category. The most probable pathway of introduction was also assigned to each taxon. The present paper presents information on spatial and temporal trends in species immigration as well as some basic statistics.