ceratodon purpureus, equisetum arvense, calamagrostis epigejos, elymus repens, erigeron canadensis, tussilago farfara, vicia sativa, achillea millefolium, agrostis gigantea, epilobium tetragonum, rumex acetosella, trifolium repens, capsella bursa-pastoris, poa annua, trifolium pratense