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After embankment of the Grevelingen estuary, large sandflats, the “Slikken van Flakkee”, were reclaimed. The first colonizing plant on these nutrient-poor sandflats is Salicornia europaea agg. Close to the shore line few but tall plants are growing, more inland the plants are smaller and the plant density is increased. At the highest, more desahnized soils, less and very small Salicornia plants are growing. Biomass, plant density, plant weight and ion composition were studied. Factors which can induce fluctuations in plant density are discussed and also factors which can influence plant growth in these areas.

The first record of Buskia nitens Alder from the Netherlands is from the Oosterschelde near Wemeldinge, where the species was collected in 1966. Electra monostachys (Busk), found SW of the isle of Terschelling in 1966 and W of the Island Schouwen in 1967, is probably also recorded for the first time from coastal waters of the Netherlands. Specimens of Conopeum seurati (Canu) were found to occur at many brackish-water localities in the Netherlands. This species has frequently been found there on previous occasions, but is has always been recorded under incorrect names, as re-examination of specimess in the collection of the Rijksmuseum van Natuurlijke Historie, Leiden, revealed.