ceratodon purpureus, roemeria argemone, equisetum arvense, erigeron canadensis, senecio vernalis, anthemis arvensis, arenaria serpyllifolia, barbula unguiculata, bromus tectorum, bryum argenteum, convolvulus arvensis, elymus repens, fallopia convolvulus, gemmabryum caespiticium, lycopsis arvensis, silene latifolia, streblotrichum convolutum, tussilago farfara