nl, agglomeratie leiden en bollenstreek, lolium perenne, ranunculus repens, agrostis stolonifera, trifolium repens, poa trivialis, holcus lanatus, alopecurus geniculatus, stellaria media, poa annua, rumex acetosa, glyceria fluitans, ranunculus acris, elymus repens, cerastium holosteoides, cardamine pratensis, alopecurus pratensis, phalaris arundinacea, phleum pratense, dactylis glomerata, juncus articulatus, persicaria amphibia, bellis perennis, persicaria hydropiper, poa pratensis, plantago major, eleocharis palustris, polygonum aviculare, cirsium arvense, ranunculus sceleratus, oenanthe fistulosa, bromus hordeaceus, glyceria maxima, myosotis scorpioides, capsella bursa-pastoris, argentina anserina, rumex obtusifolius, glechoma hederacea, stellaria alsine, lolium pratense, anthoxanthum odoratum, galium palustre, triglochin palustris, carex hirta, juncus effusus, rumex crispus, agrostis capillaris, sagina procumbens, rorippa amphibia, festuca rubra, urtica dioica