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