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