LIST OF ILLUSTRATIONS 



Generalized land vegetation map of the world 



1. Some plant-like animals ...... 



2. Zoogeographical realms and floristic regions of the world 



3. Various types of Bacteria ..... 



4. Various Blue-green Algae (Cyanophyceae) . 



5. Some forms of Green Algae (Chlorophyceae) 



6. Diatoms (Bacillariophyceae) .... 



7. Dinoflagellates (Dinophyceae) .... 



8. Some Brown Algae (Phaeophyceae) 



9. Various forms of Red Algae (Rhodophyceae) 



10. Slime-moulds (Myxomycetes) .... 



1 1 . Some Fungi ....... 



12. Various forms of Lichens (Lichenes) . 



13. Types of Liverworts (Hepaticae). 



14. Some Mosses (Musci) ..... 



15. Field Horsetail {Equisetum arvense agg.) 



16. Types of living Lycopodineae .... 



17. Various types of Ferns (Filicineae) 



18. Some examples of Gymnosperms (Gymnospermae) 



19. Features of Angiosperms ..... 



20. Features aiding water conser\ation or absorption . 



21. Features promoting aeration .... 



22. Various adaptations for climbing, twining, scrambling, and running 



23. ]\Iodifications for storing food or catching insects 



24. Diagrams illustrating some Raunkiaer life-forms . 



25. Wind-dispersal mechanisnis and disseminules 



26. Water-dispersed fruits and other bodies 



27. Adaptations for dispersal by animals . 



28. Dispersal by extension of growth or by mechanical propulsion, etc 



29. Some primitive plant fossils .... 



30. Some Psilophytineae ...... 



31. Fossil Equisetineae ...... 



32. Fossil Lycopodineae ...... 



33. Pteridosperms (reconstructed) .... 



34. A reconstructed Cycadeoid and parts of living and fossil Ginkgoales 



35. Cordaitales (reconstructed) ..... 



36. Fossil parts of Conifer and Angiosperm 



37. Distribution of plant groups in geological time as far as known 



38. Restoration of a late Devonian forest of New York 



39. Generalized reconstruction of a Carboniferous forest 



40. Reconstructed Triassic landscape 



41. A reconstructed scene in Switzerland during Miocene 



42. Known distribution of species of Liriodendroyi in Tertiary times and 



nowadays ....... 



43. Past and present distributions of Redwoods. 



44. Map showing periods since when various areas of present-day North 



American land have supposedly been free from major ice-sheets, etc. 



45. Maps illustrating ' Continental drift ' and the proximity of land-masses 



as apparently affecting floristic richness ..... 



46. IVIap showing arctic circumpolar distribution as exemplified by 



Edwards's Eutrema. ........ 



47. Alaps showing circumboreal and circumaustral_ distributions . 



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