sagina procumbens, gemmabryum caespiticium, digitaria sanguinalis, eragrostis minor, eragrostis pilosa, arenaria serpyllifolia, bromus hordeaceus, ceratodon purpureus, marchantia polymorpha, poa annua, setaria viridis, epilobium tetragonum, erigeron canadensis, plantago major, crepis tectorum, erigeron annuus, lactuca serriola, matricaria discoidea, medicago lupulina, trifolium repens