arabidopsis arenosa, bromus tectorum, ceratodon purpureus, medicago lupulina, tripleurospermum inodorum, arabidopsis thaliana, betula pendula, epilobium ciliatum, hypericum perforatum, poa annua, salix purpurea, senecio viscosus, solidago canadensis, tanacetum vulgare, viola arvensis, arrhenatherum elatius, leucanthemum vulgare, salix caprea