arnoseris minima, anthoxanthum aristatum, arabidopsis thaliana, capsella bursa-pastoris, centaurea cyanus, equisetum arvense, erigeron canadensis, galeopsis tetrahit, knautia arvensis, papaver dubium, persicaria lapathifolia, polygonum aviculare, raphanus raphanistrum, roemeria argemone, scleranthus annuus, spergula arvensis, veronica dillenii, veronica triphyllos, veronica verna