nl, alkmaar en omgeving, carex arenaria, cerastium semidecandrum, sedum acre, thinopyrum junceiforme, phleum arenarium, corynephorus canescens, cakile maritima, hypochaeris radicata, festuca rubra, hippophae rhamnoides, hieracium umbellatum, ammocalamagrostis baltica, eryngium maritimum, arenaria serpyllifolia, agrostis stolonifera, aira praecox, jacobaea vulgaris, salix repens, calamagrostis epigejos, sonchus arvensis, cerastium diffusum, erodium cicutarium, sagina nodosa, leymus arenarius, jasione montana, senecio vulgaris, rumex acetosella, galium verum, viola tricolor, phragmites australis, lysimachia maritima, honckenya peploides, draba verna, rumex angiocarpus, luzula campestris, poa pratensis, erigeron canadensis, koeleria macrantha, plantago coronopus, cynoglossum officinale, thinopyrum junceum, myosotis ramosissima, juncus articulatus, euphorbia paralias, lotus corniculatus, rubus caesius, saxifraga tridactylites, veronica arvensis, bromus hordeaceus, elymus athericus