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