scleranthus perennis, corynephorus canescens, hypochaeris radicata, rumex acetosella, bromus tectorum, cerastium semidecandrum, spergula morisonii, agrostis capillaris, erigeron canadensis, erodium cicutarium, festuca trachyphylla, pilosella officinarum, teesdalia nudicaulis, veronica verna, armeria maritima