gb, south teesside, jacobaea vulgaris, galium verum, plantago lanceolata, cerastium fontanum, erodium cicutarium, lotus corniculatus, vicia sativa, veronica arvensis, geranium molle, achillea millefolium, cirsium arvense, trifolium repens, plantago coronopus, hypochaeris radicata, trifolium campestre, senecio vulgaris, arenaria serpyllifolia, cirsium vulgare, lysimachia arvensis, bellis perennis, sedum acre, poa annua, trifolium dubium, draba verna, holcus lanatus, armeria maritima, dactylis glomerata, festuca rubra, rhinanthus minor, anthyllis vulneraria, reseda luteola, medicago lupulina, rumex acetosella, capsella bursa-pastoris, arabidopsis thaliana, stellaria media, viola tricolor, carex arenaria, sonchus asper, silene latifolia, ononis spinosa, sonchus oleraceus, arrhenatherum elatius, centaurium erythraea, agrostis stolonifera, bromus hordeaceus, pilosella officinarum, daucus carota, senecio squalidus, trifolium arvense