stellaria media, equisetum arvense, arabidopsis thaliana, carex hirta, erysimum cheiranthoides, fallopia convolvulus, galium aparine, geranium pusillum, lamium purpureum, myosotis arvensis, polygonum aviculare, senecio vernalis, sonchus arvensis, spergula arvensis, veronica arvensis, veronica hederifolia, viola arvensis