LIST OF ILLUSTRATIONS 



FIGURE PAGE 



1. Feaiale Plant of Dioon edule 2 



2. Female Plant of Zamia pumila 8 



3. Male Plant of Microcycas calocoma 10 



4. Map of Mexico 12 



$. Ta-ll'^vecjme^ OY Dioon spintdosum 17 



6. Feaiale Plant of Dioon spinulosum 19 



7. Ceratozamia mexicana near Jalapa 22 



8. The Ceratozamia Locality 23 



9. Map of Australia 26 



10. Staghorn Fern on Stradbroke Island .... 30 



11. Macrozamia Moorei, GekeralYjew 31 



12. Macrozamia Moorei, Poisoned Specimen .... 32 



13. Bowenia spectabilis, General View 33 



14. Female Plant of Cycas media 37 



15. Albatross 39 



16. Map of South Africa 41 



17. Siangeria par adoxa IN ZuLVLAND 43 



18. Encephalartos Friderici Guilielmi, Queenstown, South 



Africa 48 



19. Encephalartos horridus, Port Elizabeth, South Africa 57 



20. Euphorbia grandidens, Cathcart, South Africa . . 59 



21. Bilingual Train Bulletin, South Africa ... 61 



22. Dioon edule, Leaf Bases 71 



23. Dioon spinulosum, Transverse Section of Trunk . 75 



24. Cone Domes m Zamia floridaita 78 



25. Dioon spinulosum, Transverse Section of Wood . 79 



26. Dioon spinulosum. Radial Section of Wood ... 80 



27. Dioon spinulosum, Tangential Section of Wood . . 81 



28. A Twelve-Year Seedling of Dioon edule .... 82 



29. Dioon edule, Transverse Section of Leaflet ... 83 



30. Roots of Dioon spinulosum 84 



31. Root Tubercles of Cycas revoluta 86 



32. Male and Female Plants of Dioon edule .... 88 



xiii 



