echium vulgare, erigeron annuus, medicago falcata, medicago lupulina, daucus carota, lotus corniculatus, achillea millefolium, arenaria serpyllifolia, cerastium pumilum, cichorium intybus, erigeron canadensis, euphorbia cyparissias, geranium robertianum, lepidium virginicum, linaria vulgaris, melilotus officinalis, petrorhagia saxifraga, plantago lanceolata, poa compressa, silene latifolia, trifolium repens