nl, agglomeratie leiden en bollenstreek, agrostis stolonifera, poa trivialis, trifolium repens, ranunculus repens, phragmites australis, lolium perenne, holcus lanatus, alopecurus geniculatus, elymus repens, bolboschoenus maritimus, cirsium arvense, cerastium holosteoides, ranunculus sceleratus, stuckenia pectinata, poa annua, cardamine pratensis, glyceria fluitans, stellaria media, rumex acetosa, persicaria amphibia, eleocharis palustris, phalaris arundinacea, juncus articulatus, ranunculus acris, argentina anserina, potamogeton pusillus, lemna minor, glyceria maxima, elodea nuttallii, plantago major, poa pratensis, bellis perennis, epilobium hirsutum, urtica dioica, lemna trisulca, zannichellia palustris, triglochin palustris, bromus hordeaceus, galium palustre, scorzoneroides autumnalis, festuca rubra, polygonum aviculare, carex riparia, ceratophyllum demersum, anthoxanthum odoratum, spirodela polyrhiza, rumex crispus, dactylis glomerata, juncus effusus, myosotis scorpioides