Rense Haveman: Urtico-Aegopodietum
Rense Haveman: Verzoming met Cruciata laevipes
Rense Haveman: Primula elatior
Rense Haveman: Labiatae
Rense Haveman: Aegopodion with fallopia
Rense Haveman: Lamium maculatum
Rense Haveman: Aegopodion podagraria along the river Geul
Rense Haveman: Fallopia "japonica"
Rense Haveman: Alluvial fringe