nl, agglomeratie leiden en bollenstreek, agrostis stolonifera, poa trivialis, ranunculus repens, trifolium repens, lolium perenne, holcus lanatus, elymus repens, alopecurus geniculatus, phalaris arundinacea, poa annua, stellaria media, cardamine pratensis, cirsium arvense, rumex acetosa, cerastium holosteoides, glyceria fluitans, persicaria amphibia, juncus articulatus, plantago major, ranunculus acris, galium palustre, ranunculus sceleratus, persicaria hydropiper, phragmites australis, bolboschoenus maritimus, glyceria maxima, urtica dioica, poa pratensis, argentina anserina, myosotis scorpioides, dactylis glomerata, eleocharis palustris, bellis perennis, alopecurus pratensis, polygonum aviculare, juncus effusus, bromus hordeaceus, glechoma hederacea, phleum pratense, rumex crispus, rumex obtusifolius, festuca rubra, sagina procumbens, triglochin palustris, capsella bursa-pastoris, rorippa amphibia, lolium pratense, scorzoneroides autumnalis, carex hirta, epilobium hirsutum