Kozłowska-Kozak K., Kozak M., Pliszko A.
Fast spread of Dittrichia graveolens (Asteraceae) in south-western Poland
In 2013 and 2018, the occurrence of alien Dittrichia graveolens
was confirmed within 126 road sections (1-kilometre) of the A4 highway in the Lower Silesian Province and Silesian Province, south-western Poland. During five years the increase in abundance has been recorded within 50 sections (52.1%), a decrease within 11 sections (11.5%), whereas within 35 sections (36.5%) it remained unchanged. New data suggest that D. graveolens
is fully established in the Polish flora, and it should be classified as a potentially invasive species. Doi https://doi.org/10.2478/botlit-2019-0009 Keywords
alien plant, biological recording, Central Europe, geographical distribution, potentially invasive species, road transport