nl, agglomeratie leiden en bollenstreek, agrostis stolonifera, lolium perenne, poa trivialis, ranunculus repens, holcus lanatus, trifolium repens, elymus repens, cirsium arvense, rumex acetosa, phragmites australis, alopecurus geniculatus, phalaris arundinacea, cerastium holosteoides, stellaria media, ranunculus acris, urtica dioica, cardamine pratensis, dactylis glomerata, glyceria fluitans, poa annua, persicaria amphibia, alopecurus pratensis, glyceria maxima, epilobium hirsutum, ranunculus sceleratus, bellis perennis, glechoma hederacea, phleum pratense, plantago major, poa pratensis, bolboschoenus maritimus, festuca rubra, bromus hordeaceus, argentina anserina, eleocharis palustris, rumex crispus, rumex obtusifolius, anthoxanthum odoratum, polygonum aviculare, juncus effusus, galium palustre, persicaria hydropiper, juncus articulatus, myosotis scorpioides, anthriscus sylvestris, sparganium erectum, capsella bursa-pastoris, lolium pratense, oenanthe fistulosa, elodea nuttallii