80 PAKASITES BELONGING TO THE GENUS GLOMEEELLA. 



CINNAMON TO COTTON. 



On April 1 three flowers were inoculated by the application of 

 conidia in sterile water to the stigmas. No signs of infection fol- 

 lowed, but the young bolls soon fell off. These bolls were kept in 

 moist chamber for several weeks, but no conidia or acervuli developed. 



COTTON TO APPLE. 



Mature fruit was inoculated by puncture with conidia from a pure 

 culture of the cotton fungus. A slight decay appeared in two weeks 

 and a few acervuli with setae bearing spores were found. At the end 

 of a month the decayed spots had become larger and colored sporo- 

 phores were also found mixed with the setae. 



On October 6 four apples were inoculated by applying conidia 

 from cotton cultures to the surface. At the end of three weeks there 

 was no sign of infection or decay. 



On July 25 four apples were inoculated bj puncture with conidia 

 from a cotton boll. A slight decay appeared on two at the end of a 

 month At the end of one and one-half months the spots* were 

 three-fourths of an inch in diameter. Cultures made from the pulp 

 from these spots produced acervuli and conidia with setae, also brown 

 septate conidia, such as are mentioned by Clinton (19). Two apples 

 inoculated later in the same way produced practically the same result. 

 The development of rot was very slow. 



On October 6 four apples were inoculated by puncture using conidia 

 from cultures made from the apple which was originally inoculated 

 from cotton. Three of these apples showed small rotten spots at the 

 end of 8 days. At the end of 20 days all showed rot and two produced 

 acervuli. No typical setae were found, but some brownish sporo- 

 phores occurred which were rather intermediate in form between 

 sporophores and setae. This second generation of the cotton fungus 

 on the apple developed much more rapidly than the first generation 

 and indicated the possibility of its soon developing fully as fast as the 

 form from the apple. This experiment and similar ones with other 

 hosts appear to indicate that these organisms under certain condi- 

 tions may rather quickly adapt themselves to different hosts though 

 retaining their specific morphological characters. These results 

 also suggest the possibility of the apple acting as a bridging host in 

 some instances. This is in accord with the work of Salmon (68) on 

 mildews and with that of Ward (94) on rusts. 



COTTON TO BEAN. 



On June 4 six young pods from a greenhouse plant were inoculated 

 by applying conidia in sterile water from a cotton boll to the surface. 

 No signs of infection ever appeared. 



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