These forests are dominated by Carpinus betulus and Quercus robur, less frequently also Q. petraea agg. Their herb layer contains species of mesic and wet soils, including nutrient-demanding species of disturbed habitats. Stellario-Carpinetum occurs on wetter soils than the other associations of the alliance Carpinion betuli. They can be either heavy soils with impeded drainage, or light soils on sites with a high water table.