text: elymus repens, apera spica-venti, arabidopsis thaliana, centaurea cyanus, aphanes arvensis, arenaria serpyllifolia, chenopodium album, fallopia convolvulus, medicago lupulina, papaver dubium, roemeria argemone, stellaria media, tripleurospermum inodorum, veronica hederifolia, vicia hirsuta, vicia sativa, viola arvensis, artemisia vulgaris, erigeron canadensis