poa annua, crepis bursifolia, erigeron sumatrensis, polycarpon tetraphyllum, sonchus oleraceus, stellaria apetala, andryala integrifolia, cardamine hirsuta, catapodium rigidum, cymbalaria muralis, medicago lupulina, oxalis stricta, parietaria judaica, symphyotrichum squamatum, urtica membranacea, bromus madritensis, erigeron bonariensis