nl, agglomeratie leiden en bollenstreek, ranunculus repens, trifolium repens, lolium perenne, poa trivialis, agrostis stolonifera, stellaria media, alopecurus geniculatus, holcus lanatus, poa annua, ranunculus acris, alopecurus pratensis, rumex acetosa, elymus repens, phleum pratense, persicaria amphibia, glyceria fluitans, cardamine pratensis, cerastium holosteoides, bellis perennis, dactylis glomerata, poa pratensis, phalaris arundinacea, bromus hordeaceus, capsella bursa-pastoris, glyceria maxima, glechoma hederacea, lolium pratense, cirsium arvense, ranunculus sceleratus, myosotis scorpioides, persicaria hydropiper, eleocharis palustris, polygonum aviculare, juncus articulatus, plantago major, anthoxanthum odoratum, rumex crispus, oenanthe fistulosa, argentina anserina, agrostis capillaris, rorippa amphibia, carex hirta, rumex obtusifolius, scorzoneroides autumnalis, galium palustre, deschampsia cespitosa, equisetum fluviatile, trifolium pratense, spirodela polyrhiza, elodea nuttallii