60 



BULLETIN 380, U. S. DEPARTMENT OF AGRICULTURE. 



1 inch or less in diameter, was cut off about 6 inches from the 

 main trunk. Mycelium from corn meal in flasks was placed on the 

 cut end of the stub and covered with wet cotton, over which oiled 

 paper was tied. In about two weeks the paper and cotton were re- 

 moved. In all cases, branches similar to those inoculated were cut 

 as checks. 



Table III. — Inoculations with Endothia gyrosa. 



Source of fungus and 

 date. 



Host inocu- 

 lated. 



Number 

 of inocu- 

 lations. 



Number 

 success- 

 ful. 



Remarks. 



Fagus: 



May 8, 1913 . . 

 May 29, 1913. 



Sept. 15, 1913. 



Do 



Apr. 2, 1914 . 



Do 



Do 



May 23, 1914 . 



Do 



Do 



Do 



Quereus: 



May 29, 1913 . 

 Do 



Sept. 15, 1913. 

 Do 



Apr. 2, 1914 . 



Do 



Do 



May 23, 1914 . 



Do 



Do 



Do 



Castanea: 



May 29, 1913. 

 Do 



Apr. 2, 1914 . 

 Do 



Do. 



May 23, 1914 . 



Do 



Do 



Liquidambar: 

 May 29, 1913. 



Do 



Sept. 15, 1913. 



Do. 



Do 



Apr. 2, 1914. 



Do 



Do 



May 23, 1914 . 



Do 



Do 



Do 



Castanea . 

 Fagus 



Liquidambar 

 Quereus 



Fagus — 

 Quereus.. 

 Castanea . 



....do 



Liquidambar 



Quereus x 



Fagus 



....do 



Liquidambar 



....do... 

 Castanea . 



Fagus 



Quereus l 

 Castanea . 



....do... 



Liquidambar 



Quereus l 



Fagus 



....do 



Liquidambar 



Fagus 



Quereus 1 



Castanea . 



.do. 



Liquidambar 

 Quereus 1 



Fagus 



Liquidambar 

 Fagus 



Castanea . 



Quereus 



Fagus 



Quereus i 



Castanea 



do 



Liquidambar 



Quereus 1 



Fagus 



Pycnospores first observed on Oct. 16. 

 Pycnospores first observed on Aug. 29 for 



two and on Oct. 10 for the third. 

 No growth until the spring of 1914; pyc- 



nidia scattered and small on Oct. 13. 

 No growth until spring; well developed on 



Oct. 13, 1914. 



Pycnidial stromata well developed on Oct. 

 13, 1914. 

 Do. 



Do. 



Pycnospores first observed on Aug. 29, 1913. 

 Very slight indications of growth on Aug. 



29, 1913; a few pyenidia with spores on 



Oct. 16. 



Large well-developed pyenidia on Oct. 13, 

 1914. 



Large abundant pycnidial stromata on Oct. 

 13, 1914. 



Abundant well-developed pycnidial stro- 

 mata on Oct. 13, 1914. 



Pycnospores first observed on Aug. 29, 1913. 

 Slight indications of pycnidial formation on 



Aug. 29, 1913; pycnospores on all on Nov. 



17, 1913. 



Large well-developed pvenidial stromata 



on Oct. 13, 1914. 

 Scattered, fairly well-developed pyenidia 



on Oct. 13, 1914. 

 Abundant well-developed pyenidia on Oct. 



13, 1914. 



Pycnospores first observed on Aug. 29. 



No evidence of growth until the spring of 

 1914; pyenidia few and small on Oct. 13. 



No growth until the spring of 1914; pye- 

 nidia small on Oct. 13. 



Abundant pyenidia on Oct. 13, 1914. 



i The species used in this case was Quereus prinus, which proved to be an exceedingly unfavorable host 

 for Endothia gyrosa. 



