gb, oxfordshire, cirsium arvense, convolvulus arvensis, galium aparine, polygonum aviculare, urtica dioica, lolium perenne, dactylis glomerata, capsella bursa-pastoris, trifolium repens, stellaria media, papaver rhoeas, geranium dissectum, rumex crispus, ranunculus repens, veronica persica, lysimachia arvensis, plantago major, plantago lanceolata, helminthotheca echioides, medicago lupulina, sonchus asper, sinapis arvensis, heracleum sphondylium, elymus repens, poa annua, senecio vulgaris, matricaria discoidea, vicia sativa, poa trivialis, sonchus arvensis, arrhenatherum elatius, anthriscus sylvestris, achillea millefolium, fallopia convolvulus, sonchus oleraceus, chenopodium album, agrostis stolonifera, cirsium vulgare, trifolium pratense, lamium purpureum, alopecurus myosuroides, tripleurospermum inodorum, bromus sterilis, potentilla reptans, lamium album, matricaria chamomilla, holcus lanatus, triticum aestivum, myosotis arvensis, bromus hordeaceus