hordeum murinum, chenopodium album, tortula subulata, achillea millefolium, arctium tomentosum, argentina anserina, bromus hordeaceus, capsella bursa-pastoris, descurainia sophia, erigeron canadensis, glechoma hederacea, lolium perenne, plantago lanceolata, poa annua, polygonum aviculare, scorzoneroides autumnalis, sisymbrium officinale, tanacetum vulgare