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The saltmarshes of Langebaan Lag<x>n arc the most extensive in southern Africa. These marshes, as sampled along six transects, are described. A general marsh, consisting o f three species assemblages, was recognized and elevation above mean sea level (MSL) is discussed as a probable determinant of species distributions. However, minor variations in species distributions have been induced by changes in soil characteristics, the effects of wind on inundation depth and differences in water salinity.