A. Morphology.- I. Cytology.- II. Morphology and Anatomy of Higher Plants: Oberfl?chenskulpturen bei h?heren Pflanzen.- B. Physiology.- I. Mineral Metabolism: Function of Mineral Elements.- II. Photosynthesis: Biophysical Aspects.- III. Carbohydrate Metabolism.- IV. Secondary Plant Substances. The Monoterpene Indole Alkaloids.- V. Growth.- VI. Developmental Physiology.- C. Genetics.- I. Replication: Organization and Replication of the Eukaryotic Chromosome.- II. Mutation.- III. Function of the Genetic Material: Expression of Nuclear Genes in Higher Plants.- IV. Extranuclear Heredity: The Phylogenic Origin of Extranuclear Heredity.- D. Taxonomy.- I. Systematics and Evolution of Seed Plants.- E. Geobotany.- I. The History of Flora and Vegetation During the Quarter nary.- II. Vegetation Science (Sociological Geobotany).- III. Experimental Ecology.- IV. Symbiosen: Mykorrhiza.