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