lepidium virginicum, bryum argenteum, ceratodon purpureus, elymus repens, erigeron canadensis, festuca rubra, poa annua, sisymbrium altissimum, sisymbrium officinale, achillea millefolium, agrostis capillaris, bromus hordeaceus, papaver dubium, plantago lanceolata, polygonum aviculare, sagina procumbens, spergularia rubra, stellaria media, tripleurospermum maritimum, artemisia vulgaris, capsella bursa-pastoris, cerastium semidecandrum, crepis capillaris, oxalis stricta, rumex acetosella, sonchus oleraceus, spergula arvensis, tanacetum vulgare, trifolium dubium