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