UNIVERSITY OF CALIFORNIA PUBLICATIONS 



IN 



BOTANY 



Vol. 7, No. 14, pp. 447-498, plates 51-61 August 11, 1922 



LPJRARY 

 NEW YORK 

 BOTANICAL 



UAKDEN 



THE MORPHOLOGY, DEVELOPMENT, AND 

 ECONOMIC ASPECTS OF SCHIZOPHYLLUM 



COMMUNE FRIES 



BY 



FEEDEEICK MONROE ESSIG 



CONTENTS 



PAGE 



I. Introduction 448 



II. Material and Technique 449 



III. Morphology 451 



1. General characteristics of the sporophores .■ 451 



2. Description of the mature sporophore 453 



3. Microscopic structure 454 



IV. Growth of the sporophore 458 



i. Development in general 458 



2. Origin and development of the "gills" 461 



3. Taxonomic interpretation of the structure and development of 



the sporophores 463 



V. Economic aspects 464 



1. Geographical distribution 464 



2. List of host plants 465 



3. Extreme hardiness of the fungus 466 



4. Relation of the mycelium to cells of dead wood 467 



5. Growths upon fresh wood and living trees 468 



6. Methods of infection under natural conditions 470 



7. Association with other wood decay fungi 471 



VI. Summary and conclusion 472 



VII. Acknowledgments 473 



Literature cited 473 



Explanation of plates 478 



