Embryology of Gymnosperms. 1978. (Handbuch der Pflanzen- anatomie, Band X:2). 30 photogr. 121 figs. 1 tab. XII,302 p. gr8vo. Cloth.

Contents: Introduction/ Microsporangium (Development and InternalDifferentiation. Exothecium and Endothecium. Tapetum. Microsporogenesis.Spore Wall. Dehiscence)/ Pre-Pollination Ovule (Components of the Ovule.Orientation and Symmetry of the Ovule. Initiation of the Ovular Parts)/Development of Nucellus/ Mature (Primary)/ Nucellus/ Pollen Chamber/Megasporogenesis/ Integument and other Covering Structures/ PollinationMechanism (General Mechanism. Pollination Drop. Winged Pollen. SpecialMechanisms. Entomophily. Evolution)/ Male Gametophyte (Terminology.General Patterns of Development and Variations. Fossil Forms. Gnetum andWelwitschia. Homologies. In Vitro Pollen Culture)/ Post-Pollination/Pre-Fertilization Ovule (Closing of Micropyle. Closure of Pollen Chamber. Intermediary Chamber. Patterns of Ovule Enlargement. NucellarVasculature. Nutritive Tissue)/ Female Gametophyte (General Pattern ofDevelopment. Variations. Gnetum and Welwitschia. Tent Pole. ArchegonialChamber. Megaspore Membrane. In Vitro Culture Studies)/ Pollen Tube andMale Gamete (Pollen Germination. Common Pollen Tube. Pollen Tube inCycads and Ginkgo. Body Cell and Male Gametes. Multiple Male Gametes)/Archegonium and Female Gamete (Single Archegonia and ArchegonialComplexes. Neck Cells. Jaket Layer. Cytoplasm. Egg Nucleus. ProthallialTubes of Welwitschia. Homologies)/ Fertilization (Release of Male Gametes)/ Embryo (Proembryogeny. Early Embryogeny. Late Embryogeny.Mature Embryo. In Vitro Culture Studies)/ Postfertilization Ovule/Seed(Development of Seed Coat. Mature Seed Coat. Other Coverings. Endosperms)/ Embryology in Relation to Time (Seasonal Development.Duration of the Reproductive Cycle. Ecological Considerations)/Conclusions/ Bibliography (26 p.).