New alien vascular plants of Slovakia: records from 2008–2021
Pavol Eliáš, Jana Májeková, Katarína Hegedüšová, Matej Dudáš, Dominik Letz, Pavol Mereďa, Ladislav Bakay, Tomáš Čejka, Daniel Dítě, Zuzana Dítě, Ľuba Ďurišová, Róbert Gregorek, Gergely Király, Lenka Mártonfiová, Pavol Mártonfi, Filip Spanyik, Ivana Svitková, Richard Hrivnák
Abstract
Monitoring the occurrence of new alien species among native flora is the first prerequisite for preventing their later invasive spread. During the last decade, we recorded data regarding 25 alien taxa new to Slovakia including 21 casual and 4 locally naturalised species, with ornamental plants predominating significantly. The locally naturalised species Cenchrus flaccidus, Cotoneaster zabelii, Doronicum pardalianches and Panicum virgatum are able to spread to native habitats and thus represent the greatest risk to native plant species in Slovakia.