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