elymus repens, ceratodon purpureus, arenaria serpyllifolia, erigeron canadensis, medicago lupulina, senecio vernalis, apera spica-venti, bryum argenteum, erodium cicutarium, tortula lindbergii, bromus sterilis, chenopodium album, thlaspi arvense, tripleurospermum inodorum, artemisia vulgaris, lycopsis arvensis, veronica opaca, viola arvensis