gb, oxfordshire, cirsium arvense, galium aparine, capsella bursa-pastoris, veronica persica, stellaria media, papaver rhoeas, urtica dioica, viola arvensis, lysimachia arvensis, convolvulus arvensis, heracleum sphondylium, tripleurospermum inodorum, chenopodium album, rumex crispus, lamium purpureum, polygonum aviculare, myosotis arvensis, senecio vulgaris, sinapis arvensis, matricaria discoidea, sonchus asper, ranunculus repens, anthriscus sylvestris, poa annua, alopecurus myosuroides, fallopia convolvulus, geranium dissectum, lolium perenne, sonchus arvensis, plantago major, trifolium repens, triticum aestivum, vicia sativa, lamium album, elymus repens, dactylis glomerata, persicaria maculosa, avena fatua, euphorbia helioscopia, plantago lanceolata, bromus sterilis, arrhenatherum elatius, rumex obtusifolius, sonchus oleraceus, raphanus raphanistrum, atriplex patula, cirsium vulgare, aethusa cynapium, medicago lupulina, poa trivialis