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