DistributionRead full entry
Range DescriptionSisymbrium supinum is endemic to Central Europe where it extends from France to Estonia and Sweden. It has been described as an adventive species in Northwestern European Russia (I. Illarionova pers. comm. 2010). In Germany, it is classed as introduced (Bundesamt für Naturschutz 2010).
There is one single occurrence in Denmark. Latvia used to have one locality which is now extinct. In Sweden, it is found on two small islands with an area of occupancy of 672 km². In Switzerland, it can only be found at Lac du Joeux, 1,000 m asl. with an area of occupancy of 6 km². The plant is extinct in the Netherlands.
There are 84 localities (70 locations) in France.