pt, área metropolitana do porto, cynodon dactylon, trifolium campestre, plantago coronopus, bromus hordeaceus, eryngium campestre, plantago lanceolata, vulpia bromoides, erodium cicutarium, bellardia viscosa, agrostis stolonifera, trifolium arvense, lysimachia arvensis, erigeron canadensis, crepis capillaris, festuca bromoides, medicago sativa, cerastium glomeratum, vicia villosa, veronica arvensis, foeniculum vulgare, geranium molle, daucus carota, hypochaeris radicata, aira caryophyllea, lolium multiflorum, poa annua, vicia sativa, sherardia arvensis, dittrichia viscosa, jacobaea vulgaris, raphanus raphanistrum, juncus bufonius, dactylis glomerata, mentha pulegium, trifolium dubium, silene gallica, echinochloa crus-galli, trifolium subterraneum, holcus lanatus, petrorhagia prolifera, lotus corniculatus, medicago lupulina, centaurium erythraea, convolvulus arvensis, plantago arenaria, senecio inaequidens, geranium purpureum, potentilla reptans, poa bulbosa, echium vulgare