apera spica-venti, polygonum aviculare, salsola tragus, achillea millefolium, cirsium arvense, crepis tectorum, elymus repens, erigeron canadensis, lactuca serriola, lepidium densiflorum, melilotus albus, tripleurospermum inodorum, tussilago farfara, artemisia vulgaris, atriplex patula, cerastium holosteoides, cirsium vulgare, deschampsia cespitosa, erigeron acris, tragopogon dubius, trifolium repens