Het voorkomen van Apium repens (Jacq.) Lag. (Kruipend moerasscherm) in Nederland

In 1983 Apium repens was rediscovered in 3 localities in Zeeuws-Vlaanderen (Province of Zeeland). Since then it has been recorded in another 4 localities scattered through the country, on 2 of which it is still abundant. In one of the Zeeuws-Vlaanderen localities it declined strongly, to disappear in 1993. The restauration of that locality, by starting a regular mowing regime, has been successful, but the author feels that additional measures should be undertaken in order to create better germination sites for this endangered species; a phyto-sociological description of the locality in 1983 and since 1993 has been added.