agrostis stolonifera, ceratodon purpureus, cirsium arvense, pohlia nutans, polytrichum piliferum, brachythecium rutabulum, rumex acetosella, zea mays, achillea millefolium, cerastium holosteoides, elymus repens, erigeron canadensis, hypochaeris radicata, logfia minima, pilosella officinarum, senecio vulgaris