trifolium arvense, bromus hordeaceus, centaurea stoebe, echium vulgare, geranium pusillum, potentilla argentea, arenaria serpyllifolia, artemisia campestris, artemisia vulgaris, dactylis glomerata, erigeron canadensis, medicago minima, pilosella officinarum, plantago lanceolata, sedum acre, petrorhagia prolifera