nl, agglomeratie leiden en bollenstreek, lolium perenne, ranunculus repens, trifolium repens, agrostis stolonifera, poa trivialis, dactylis glomerata, holcus lanatus, elymus repens, ranunculus acris, poa annua, stellaria media, cirsium arvense, phleum pratense, rumex acetosa, poa pratensis, cerastium holosteoides, plantago major, bellis perennis, alopecurus geniculatus, alopecurus pratensis, polygonum aviculare, persicaria amphibia, capsella bursa-pastoris, glechoma hederacea, rumex obtusifolius, rumex crispus, bromus hordeaceus, phalaris arundinacea, argentina anserina, urtica dioica, festuca rubra, plantago lanceolata, trifolium pratense, cardamine pratensis, glyceria fluitans, scorzoneroides autumnalis, carex hirta, achillea millefolium, arrhenatherum elatius, agrostis capillaris, lolium pratense, glyceria maxima, ranunculus sceleratus, anthriscus sylvestris, heracleum sphondylium, matricaria discoidea, juncus articulatus, eleocharis palustris, cynosurus cristatus, persicaria hydropiper