polygonum aviculare, bryum argenteum, artemisia vulgaris, descurainia sophia, streblotrichum convolutum, atriplex patula, bromus hordeaceus, carex hirta, chenopodium album, cichorium intybus, elymus repens, erigeron canadensis, funaria hygrometrica, galinsoga parviflora, lepidium ruderale, lolium perenne, plantago major, sisymbrium officinale, artemisia absinthium, matricaria discoidea