This alliance includes productive ruderal and semi-natural vegetation types of mesic and nutrient-rich habitats. Individual associations are represented by species-poor monodominant stands of various broad-leaved perennial herbs, especially of tall Apiaceae. Most of the dominants are native species which tend to spread in anthropogenic habitats, however, we assign to this alliance also monodominant stands of some invasive neophytes. Habitats include roadsides, unmanaged gardens, parks, abandoned meadows, waste places or disturbed stream banks. This alliance is widespread and common from lowland to montane areas of the Czech Republic.