text: ceratodon purpureus, elymus repens, agrostis capillaris, apera spica-venti, arabidopsis thaliana, bromus tectorum, erigeron canadensis, erodium cicutarium, filago arvensis, holosteum umbellatum, trifolium arvense, veronica arvensis, viola arvensis, centaurea cyanus, hypochaeris radicata, senecio vernalis, vicia sativa, fallopia convolvulus, lactuca serriola, potentilla argentea