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