descurainia sophia, achillea millefolium, polygonum aviculare, sisymbrium officinale, agrostis capillaris, bromus hordeaceus, carduus crispus, ceratodon purpureus, convolvulus arvensis, elymus repens, erigeron canadensis, euphorbia cyparissias, lactuca serriola, lepidium densiflorum, medicago lupulina, pilosella officinarum, pimpinella saxifraga, plantago lanceolata, plantago major, poa pratensis, scorzoneroides autumnalis, syntrichia ruralis, tripleurospermum inodorum