eragrostis minor, digitaria sanguinalis, ceratodon purpureus, erigeron canadensis, setaria viridis, amaranthus retroflexus, brachythecium albicans, bryum argenteum, capsella bursa-pastoris, chenopodium album, elymus repens, galinsoga parviflora, portulaca oleracea, malva neglecta, silene latifolia