scleranthus annuus, secale cereale, apera spica-venti, viola arvensis, agrostis gigantea, arnoseris minima, centaurea cyanus, cerastium arvense, draba verna, elymus repens, lolium perenne, teesdalia nudicaulis, tripleurospermum inodorum, vicia hirsuta, vicia sativa, vicia tetrasperma