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