464 Umversity of California Publicaticms im, Botamy [Vol. 7 



V. ECONOMIC ASPECTS 



1. GEOGRAPHICAL DISTRIBUTION 



In a discussion of the economic importance of Schizophyllum it 

 seems well to go into detail concerning its distribution throughout 

 the world, as any consideration of the amount of damage done must 

 take into account both its distribution and its abundance in any dis- 

 trict. Fortunately a great number of statements have been published 

 concerning its collection in various places. In the table below are 

 given by continents the countries or regions in which Schizophyllum 

 has been collected or reported, the authority, and the date of publi- 

 cation of the article. The table is representative rather than exhaus- 

 tive, as only one reference to a locality has been included. 



TABLE OF GEOGRAPHICAL DISTRIBUTION 



The sporophores of the Schizophyllum in the field are usually small 

 and inconspicuous. When found they are usually in large numbers 

 within a small area on a log or tree. Only an occasional tree or log 

 displays them in this region (California). Heald (1906) reported 

 that every tree of a small orchard of cherries in Nebraska was infected 

 with the fungus, but this seems to be an extreme case. 



