gb, oxfordshire, convolvulus arvensis, cirsium arvense, urtica dioica, plantago lanceolata, heracleum sphondylium, potentilla reptans, polygonum aviculare, achillea millefolium, vicia sativa, ranunculus repens, galium aparine, geranium dissectum, rumex crispus, capsella bursa-pastoris, dactylis glomerata, trifolium repens, lolium perenne, papaver rhoeas, helminthotheca echioides, arrhenatherum elatius, medicago lupulina, silene latifolia, sonchus asper, plantago major, senecio vulgaris, tripleurospermum inodorum, veronica persica, chenopodium album, trifolium pratense, lysimachia arvensis, lamium album, stellaria media, elymus repens, anthriscus sylvestris, artemisia vulgaris, poa trivialis, daucus carota, sonchus oleraceus, lamium purpureum, matricaria discoidea, bromus hordeaceus, poa annua, triticum aestivum, bromus sterilis, raphanus raphanistrum, cirsium vulgare, dipsacus fullonum, sisymbrium officinale, jacobaea vulgaris, sinapis arvensis