lygeum spartum, helminthotheca echioides, plantago coronopus, poa bulbosa, rostraria cristata, scorpiurus muricatus, sulla spinosissima, achyrophorus valdesii, allium sphaerocephalon, anacyclus clavatus, avena barbata, linum strictum, lolium rigidum, lysimachia foemina, medicago polymorpha, parapholis incurva, bellardia trixago, rapistrum rugosum, scorzonera laciniata, vicia sativa