nl, agglomeratie leiden en bollenstreek, carex arenaria, sedum acre, phragmites australis, cerastium semidecandrum, agrostis stolonifera, hippophae rhamnoides, solanum dulcamara, calamagrostis epigejos, juncus articulatus, phleum arenarium, stuckenia pectinata, salix repens, cakile maritima, eryngium maritimum, hypochaeris radicata, eleocharis palustris, thinopyrum junceiforme, hydrocotyle vulgaris, festuca rubra, rubus caesius, arenaria serpyllifolia, corynephorus canescens, cynoglossum officinale, erigeron canadensis, erodium cicutarium, sonchus arvensis, jacobaea vulgaris, myriophyllum spicatum, epipactis palustris, euphorbia paralias, parnassia palustris, poa pratensis, lythrum salicaria, senecio vulgaris, sagina nodosa, galium verum, koeleria macrantha, aira praecox, claytonia perfoliata, hieracium umbellatum, lycopus europaeus, bolboschoenus maritimus, lotus corniculatus, veronica arvensis, saxifraga tridactylites, luzula campestris, rumex acetosella, plantago coronopus, urtica dioica, draba verna