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