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