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