text: hordeum vulgare, argentina anserina, avena sativa, convolvulus arvensis, lysimachia arvensis, apera spica-venti, centaurea cyanus, persicaria lapathifolia, stellaria media, achillea millefolium, cirsium arvense, elymus repens, equisetum arvense, euphorbia helioscopia, fallopia convolvulus, galinsoga parviflora, matricaria discoidea, medicago lupulina, myosotis arvensis, persicaria maculosa, polygonum aviculare, scleranthus annuus, valerianella dentata, valerianella rimosa, veronica arvensis, vicia sativa, vicia tetrasperma