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