cerastium semidecandrum, ceratodon purpureus, erodium cicutarium, rumex acetosella, agrostis capillaris, hypochaeris radicata, arabidopsis thaliana, crepis tectorum, draba verna, elymus repens, senecio vernalis, spergula morisonii, bromus hordeaceus, capsella bursa-pastoris, viola arvensis