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