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