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