secale cereale, scleranthus annuus, aphanes arvensis, arabidopsis thaliana, centaurea cyanus, equisetum arvense, roemeria argemone, rumex acetosella, achillea millefolium, capsella bursa-pastoris, cerastium arvense, draba verna, myosotis stricta, ranunculus repens, veronica hederifolia, veronica triphyllos, viola arvensis