nl, agglomeratie leiden en bollenstreek, elymus repens, agrostis capillaris, agrostis stolonifera, poa annua, rumex acetosella, poa pratensis, holcus lanatus, rumex angiocarpus, poa trivialis, stellaria media, cirsium arvense, urtica dioica, trifolium repens, plantago lanceolata, bromus hordeaceus, phragmites australis, ranunculus repens, festuca rubra, achillea millefolium, cerastium semidecandrum, hypochaeris radicata, lolium perenne, eleocharis palustris, veronica arvensis, carex hirta, corynephorus canescens, stuckenia pectinata, dactylis glomerata, capsella bursa-pastoris, carex arenaria, lemna minor, persicaria amphibia, anthoxanthum odoratum, plantago major, chenopodium album, fallopia convolvulus, cerastium holosteoides, juncus articulatus, rumex acetosa, polygonum aviculare, glechoma hederacea, erigeron canadensis, erodium cicutarium, juncus bufonius, argentina anserina, alopecurus geniculatus, myriophyllum spicatum, phalaris arundinacea, rumex crispus, plantago uliginosa