CHESTNUT BARK DISEASE. 425 



identified as the same thing as Endothia gyrosa. We give below 

 the nomenclature which probably applies to the fungus in 

 question. 



Endothia gyrosa (Schw.) Fr. 



f Sphaeria fluens Sow. Eng. Fung. t. 438 (with t. 420). 



1809? 



Sphaeria gyrosa Schw.* Fung. Car. Sup. n. 24. 1822. 

 Sphaeria Tuberculariae, Rudolphi in Linnaea 4:393. 1829. 

 f Sphaeria radicalis Schw.f N. A. Fung. n. 1269. 1831. 

 Endothia gyrosa Fr. Summ. Veg. Scand. : 385. 1845. 

 Diatrype radicalis Mont. Ann. Sci. Nat. Bot. 3 : 123. 1855. 

 Falsa radicalis Ces. & De Not. $chem. Sfer. Ital. : 33. 



1863. 



Endothia radicalis De Not. Sfer. Ital. i 1 : 9. 1863. 

 Melo gramma gyrosum Tul. Sel. Fung. Carp. 2 : 87. 1863. 

 Nectria gyrosa B. & Br.J Journ. Linn. Soc. Bot. 15 : 86. 



1877. 



Chry phone ctria gyrosa Sacc.J Syll. Fung. 17:784. 1905. 

 Endothiella gyrosa Sacc. Ann. Myc. 4 : 273. 1906. 

 Endothia mrginiana Anders. Phytop. 2:261. D. 1912. 



Endothia gyrosa var. parasitica. We have previously spoken 

 of the very close connection of Endothia gyrosa to the chestnut 

 blight, and have shown that Farlow and Shear in this country, 

 and von Hohnel, Saccardo and Rehm in Europe recognize them 

 morphologically as a single species. Recently we sent ascospore 

 specimens of the two on chestnuts from this country to these 

 European botanists for further comparison, and their opinion 

 as to the relationship. They still maintained that the American 

 chestnut blight was not different specifically from E. gyrosa as 

 found in Europe and America, but was merely a more luxuriant 

 strain that had so developed through its parasitic habit. It is 

 to be remembered, however, that all of the above investigators, 

 except Shear, have based their conclusions merely on micro- 

 scopic examination, since they have not had opportunity to 

 study the situation in the field, and have not made cultures or 

 inoculation experiments. On the other hand, it is to be taken 



* The conidial stage of the fungus described. 



fThe asco-stage of the fungus described. Fries apparently published 

 his description before Schweinitz. 

 $This fungus, according to von Hohnel (29). 



