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