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