corynephorus canescens, thymus serpyllum, ambrosia artemisiifolia, cerastium semidecandrum, rumex acetosella, scleranthus polycarpos, spergula pentandra, teesdalia nudicaulis, tortula muralis, veronica verna, erigeron canadensis, hypochaeris radicata, logfia minima, luzula campestris, pilosella officinarum