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