Water Plants

Preface; Part I. Water Plants as a Biological Group, with a Consideration of Certain Typical Life-histories: 1. Water plants as a biological group; 2. The life-history of the Alismaceae; 3. The life-history of the Nymphaeaceae and of Limnanthemum; 4. The life-history of Hydrocharis, Stratiotes, and other fresh-water Hydrocharitaceae; 5. The life-history of the Potamogetonaceae of fresh waters; 6. The life-history of the Lemnaceae and of Pistia; 7. The life-history of Ceratophyllum; 8. The life-history of the aquatic Utricularias and of Aldrovandia; 9. The life-history of the Tristichaceae and Podostemaceae; 10. The life-history of the marine Angiosperms; Part II. The Vegetative and Reproductive Organs of Water Plants, Considered Generally: 11. Leaf types and Heterophylly in aquatics; 12. The anatomy of submerged leaves; 13. The morphology and vascular anatomy of aquatic stems; 14. The aerating system in the tissues of Hydrophytes; 15. Land forms of water plants, and the effect of water upon land plants; 16. The roots of water plants; 17. The vegetative reproduction and wintering of water plants; 18. The flowers of water plants and their relation to the environment; 19. The fruits, seeds and seedlings of water plants; Part III. The Physiological Conditions of Plant Life in Water: 20. Gaseous exchange in water plants; 21. Absorption of water and transpiration current in Hydrophytes; 22. The influence of certain physical factors in the life of water plants; 23. The ecology of water plants; Part 4. The Study of Water Plants from the Phylogenetic and Evolutionary Standpoints: 24. The dispersal and geographical distribution of water plants; 25. The affinities of water plants and their systematic distribution among the Angiosperms; 26. The theory of the aquatic origin of Monocotyledons; 27. Water plants and the theory of natural selection, with special reference to the Podostemaceae; 28. Water plants and the 'Law of loss' in evolution; Bibliography; Index.