nl, agglomeratie leiden en bollenstreek, agrostis stolonifera, lolium perenne, trifolium repens, ranunculus repens, poa trivialis, elymus repens, holcus lanatus, poa annua, ranunculus acris, dactylis glomerata, stellaria media, alopecurus geniculatus, cirsium arvense, rumex acetosa, cerastium holosteoides, plantago major, bellis perennis, polygonum aviculare, persicaria amphibia, glyceria fluitans, phleum pratense, poa pratensis, alopecurus pratensis, phalaris arundinacea, argentina anserina, capsella bursa-pastoris, glechoma hederacea, urtica dioica, cardamine pratensis, glyceria maxima, ranunculus sceleratus, eleocharis palustris, rumex crispus, festuca rubra, rumex obtusifolius, trifolium pratense, scorzoneroides autumnalis, bromus hordeaceus, carex hirta, plantago lanceolata, phragmites australis, ceratophyllum demersum, elodea nuttallii, spirodela polyrhiza, stuckenia pectinata, persicaria hydropiper, sparganium erectum, myosotis scorpioides, lemna trisulca, juncus articulatus