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