text: brassica nigra, persicaria amphibia, chenopodium album, erucastrum gallicum, agrostis stolonifera, artemisia vulgaris, capsella bursa-pastoris, carduus crispus, elymus repens, erysimum cheiranthoides, glechoma hederacea, persicaria maculosa, poa annua, polygonum aviculare, rumex obtusifolius, senecio vulgaris, sisymbrium officinale, solanum nigrum, sonchus arvensis, sonchus oleraceus, tripleurospermum maritimum