nl, agglomeratie leiden en bollenstreek, carex arenaria, sedum acre, eryngium maritimum, cerastium semidecandrum, cakile maritima, salix repens, thinopyrum junceiforme, hypochaeris radicata, phleum arenarium, phragmites australis, agrostis stolonifera, hippophae rhamnoides, festuca rubra, hieracium umbellatum, corynephorus canescens, calamagrostis epigejos, juncus articulatus, arenaria serpyllifolia, hydrocotyle vulgaris, solanum dulcamara, lotus corniculatus, sonchus arvensis, stuckenia pectinata, galium verum, euphorbia paralias, parnassia palustris, ammocalamagrostis baltica, leymus arenarius, eleocharis palustris, plantago lanceolata, jacobaea vulgaris, aira praecox, epipactis palustris, rubus caesius, jasione montana, honckenya peploides, erodium cicutarium, luzula campestris, sagina nodosa, koeleria macrantha, erigeron canadensis, poa pratensis, senecio vulgaris, rumex acetosella, thinopyrum junceum, lysimachia maritima, polygala vulgaris, schoenus nigricans, rumex angiocarpus, calystegia soldanella