text: bromus tectorum, poa compressa, berteroa incana, crepis tectorum, erigeron canadensis, lepidium ruderale, medicago lupulina, populus nigra, tanacetum vulgare, trifolium repens, agrostis gigantea, artemisia absinthium, artemisia vulgaris, astragalus cicer, bromus hordeaceus, calamagrostis epigejos, centaurea jacea, echium vulgare, elymus repens, erigeron acris, erysimum cheiranthoides, lappula squarrosa, oenothera rubricaulis, sisymbrium loeselii, trifolium pratense, ulmus pumila