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