How threatened is the Polish wetland flora?

Wetlands cover almost 14% of the area of Poland, but most of them are in bad condition. This paper aims are compiling an up-to-date Polish list of wetland species based on the data on their distribution and threat status in individual regions. 609 species were analyzed and their respective threat categories were examined in 13 local lists. It has been shown that 65% of the wetland species are classified as threatened taxa in at least one red local list. The data were used to create a formula for calculating the new threat category for each of the species. The resulting red list of wetland species includes 283 taxa.