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