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