Includes bibliographical references.

1. The ethics of comparison -- Problems of the variation patterns -- Problems in phylogenetic interpretation -- 2. Cellular components, idioblasts, laticifers, and secretory structures -- Distinctive cell-wall characteristics -- Cellular contents -- Laticifers -- Mucilage cells, canals, and cavities -- Secretory canals and cavities -- 3. Epidermis and trichomes -- Epidermis -- Trichomes -- 4. Xylem -- The vessel element : key to xylem evolution in angiosperms -- Secondary xylem -- Means of comparison -- Achievements of wood anatomy -- 5. Phloem -- 6. Vascularization of the shoot -- Seedling -- Nodal anatomy -- Node-petiole anatomy -- Additional vascularization patterns -- 7. Root -- Epidermis and cortex -- Endodermis -- Vascular core -- Lateral roots -- Types of roots -- Haustoria -- Comparative studies -- 8. Histology of the stem -- Primary stem -- Periderm and bark -- Anomalous secondary thickening -- Secondary growth in monocotyledons -- Inflorescence axis -- 9. Leaf -- Leaf histology -- Venation patterns -- Types of leaves -- Systematic studies -- 10. Flower, and associated topics -- Vascular anatomy -- Floral histology -- Fruit histology -- Seed histology.