With one new volume each year, this series keeps scientists and advanced students informed of the latest developments and results in all areas of botany. The present volume includes reviews on structural botany, plant physiology, genetics, taxonomy, and geobotany.

Review.- Stable Isotope in Plant Physiology and Ecology.- A. Structural Botany.- I. Cytology and Morphogenesis of the Prokaryotic Cell.- II. Cytology and Morphogenesis of Pollen and Spores.- B. Physiology.- I. Plant Water Relations.- II. Humic Substances and Plant Nutrition.- III. Selected Topics of Polyketide Biosynthesis.- IV. Photosynthesis Carbon Metabolism: The Chloroplast's Sesquicentenary, and Some Thoughts on the Limits to Plant Productivity.- V. Plant Stress. The Adaptive Potential of Dynamic Systems..- VIa. Photochrome.- VIb. Movement of Pulvinated Leaves.- C. Genetics.- I. Replication: The Role of Escherichia coli Heat Shock Proteins in DNA Replication.- II. Recombination: Sexual Reproduction in Plants: Self-Incompatibility as a Mechanism Promoting Outbreeding and Gene Flow.- III. Mutation: Modified Starch Metabolism in Mutant and Transgenic Plants.- IV. Function: Histones in Higher Plants.- V. Extrachromosomal Inheritance: Yeast Linear Killer Plasmids as a Tool in Genetic Engineering.- D. Taxonomy.- I. Systematics of the Bryophytes.- II. Paleobotany of Land Plants.- E. Geobotany.- I. Plant Geography.- II. Salt Resistance in Herbaceous Halophytes and Mangroves.- F. Special Topics.- I. Mycorrhizae: Ectomycorrhiza and Ectendomycorrhiza.- II. Symbioses: Mycorrhizae.