Genetic Differentiation: Variation in Single Genes or Molecular Variation.- Chemical Diversification Within the Dactylisglomerata L. Polyploid Complex (Gramineae).- Enzymatic Variability of Beechstands (Fagussylvatica L.) on Three Scales in Europe.- Geographic Origins, Genetic Diversity and the Molecular Clock Hypothesis in the Oryzeae.- Breeding System and Genetic Structure of a Chenopodiumalbum Population According to Crop and Herbicide Relation.- Does Cytoplasmic Variation in Plantagolanceolata Contribute to Ecological Differentiation?.- Genetic Differentiation: Variation in Phenotype and Fitness.- Adaptation, Differentiation and Reproductive Systems in Loliumperenne.- Preferentials Associations among Characters in Crosses Between Pearl Millet (Penisetumtyphoïdes) and its Wild Relatives.- Genetic Diversity of the Foxtail Millet (Setariaitalica).- Morphological Variation, Breeding System and Demography at Populational and Subpopulational Levels in Armeriamaritima (Mill.) Willd.- Gynodioecy in Thyme, Thymusvulgaris L. : Evidence from Successional Populations.- Pines, Plantains and Thyme: Three Examples of Frequency — Dependant Selection.- Habitat, Genetic Structure and Dynamics of Perennial and Annual Populations of the Asian Wild Rice Oryzaperennis..- Genetic and Environmental Constraints to Selection Response for Juvenile Characters in Geraniumcarolinianum.- The Effects of Neighbors as Environments: Characterisation of the Competitive Performance of Danthoniaspicata Genotypes.- Genotypic and Phenotypic Variation Within Rumexacetosella L. Populations Along a Secondary Succession.- Regulation of a Shortgrass Steppe Plant Community in Time and Space: Physiology and Genetics.- Genetic Differentiation and Phenotypic Plasticity in Populations of Plantogolanceolata inResponse to Nutrient Levels..- Ion Transport Differentiation Between Populations from Four Contrasting Soils, in the Mediterranean Ruderal Plant Species Dittrichiaviscosa W. Greuter (ex. Inulaviscosa Aiton)..- Dispersal: Gene Flow.- Gene flow in Trifoliumrepens. An Expanding Genetic Neighbourhood.- The Estimation of Gene Flow Parameters from a Continuous Population Structure.- Protogyny in Plantagolanceolata Populations: an Adaptation to Pollinisation by Wind?.- Adjacent Populations of Cocksfoot (Dactylisglomerata L.): A Detailed Study of Allozyme Variation Across Constrasting Habitats.- Gene Flow and Population Structure in Coffeacanephora Coffee Populations in Africa.- Dispersal : Phenotype Dispersal.- The Fitness of Dispersed Progeny: Experimental Studies with Anthoxanthumodoratum.- A One Species — One Population Plant : How Does the Common Fig Escape Genetic Diversification?.- Horizontal Structure of Populations: Migration, Adaptation and Drift : an Experimental Study of Thymusvulgaris.- Seed Dimorphism for Dispersal : Physiological, Genetic and Demographical Aspects.- Heterocarpy, Fruit Polymorphism and Discriminating Dissemination in the Genus Fedia (Valerianaceae)..- Conference Commentary.- Species Index.