The subject of this paper is the treeless vegetation occurring on shell deposits in the province of Bohuslan on the West coast of southern Sweden, North of Goteborg. These shell accumulations are of marine origin and are scattered throughout the province. They are situated from 0-130 m above sea level and are of late Glacial to very recent age. The thickness and the extent of the deposits are very variable. The paper is much more than just a description and classification of the various vegetation types. The author, working according to the principles of the French-Swiss school of phytosociology, may be called in a way a pupil of Tiixen. He pays much attention to habitat factors, floristic specialties, phytogeographic aspects, etc.