PAGES 

 No. 10. The Comparative Histology of Certain Californian Boletaeeae, 



by Harry S. Yates 221-274 



No. 11. A Eevision of the Tuberales of California, by Helen Margaret 



Gilkey 275-356 



I. Introduction 275 



II. Materials and Technique 277 



III. Distribution in California 279 



IV. Economic Importance 280 



V. Morphology and Phylogeny '. 281 



VI. Synopsis of Eevision 287 



VII. Special Morphology and Taxonomy 288 



VIII. Key to Genera 342 



IX. Acknowledgments 342 



X. Diagnoses of New Genus and New Species 343 



XL Works Eeferred to 347 



XII. Explanation of Plates 348 



No. 12. Species Novae vel Minus Cognitae, by T. S. Brandegee 357-361 



No. 13. Plantae Mexicanae Purpusianae, VIII, by Townshend Stith 



Brandegee : 363-375 



No. 14. New Pacific Coast Marine Algae, I, by Nathaniel Lyon Gardner 377-416 



No. 15. An Account of the Mode of Foliar Abscission in Citrus, by 



Eobert W. Hodgson 417-428 



No. 16. New Pacific Coast Marine Algae, II, by Nathaniel Lyon 



Gardner 429^54 



No. 17. New Pacific Coast Marine Algae, III, by Nathaniel Lyon 



Gardner 455-486 



No. 18. New Pacific Coast Marine Algae, IV, by Nathaniel Lyon 



Gardner 487-496 



No. 19. Plantae Mexicanae Purpusianae, IX, by Townshend Stith 



Brandegee 497-504 



Index 505-517 



[ii] 



