erigeron canadensis, apera spica-venti, arenaria serpyllifolia, elymus repens, capsella bursa-pastoris, ceratodon purpureus, medicago lupulina, myosotis arvensis, cerastium semidecandrum, crepis tectorum, papaver rhoeas, secale cereale, senecio vernalis, veronica arvensis, vicia hirsuta, vicia sativa, viola arvensis, cynoglossum officinale