text: amaranthus retroflexus, chenopodium album, mercurialis annua, persicaria maculosa, sorghum halepense, artemisia vulgaris, convolvulus arvensis, cynodon dactylon, digitaria sanguinalis, euphorbia helioscopia, lamium purpureum, arenaria serpyllifolia, cardamine hirsuta, galinsoga parviflora, hypericum perforatum, senecio vulgaris, sonchus asper, veronica persica