ceratodon purpureus, papaver rhoeas, bromus tectorum, equisetum arvense, erigeron canadensis, gemmabryum caespiticium, roemeria argemone, bryum argenteum, convolvulus arvensis, elymus repens, rumex acetosella, scleranthus annuus, senecio vernalis, vicia sativa, achillea millefolium, bromus hordeaceus, cota tinctoria, erigeron acris, poa compressa, pterygoneurum ovatum, tussilago farfara