ENDOTHIA PARASITICA AND RELATED SPECIES. 9 



This seems to explain the origin of the specimen which Schweinitz 

 received from Dr. Torrey. The writers have searched in vain for 

 Endothia gyrosa in Amherst and vicinity and they know of no col- 

 lections of the fungus from Massachusetts. No specimens upon 

 which Hitchcock's list was based have been located. 



Since it can be clearly shown that little or none of the original 

 type collection of this species is in the Philadelphia Academy col- 

 lection it must be looked for elsewhere. It is found by reference to 

 Schweinitz 's correspondence and manuscripts, which have been care- 

 fully examined by the writers through the courtesy of the Phila- 

 delphia Academy and the descendants of Schweinitz, and also by 

 studies in foreign herbaria that he divided his specimens with many 

 of his European and American correspondents. As he does not ap- 

 pear to have kept any duplicates separate from his regular collection 

 it seems probable that the specimens he distributed were taken from 

 the original packets. Thus in some cases, apparently all of a type 

 specimen was removed from the original packet. In fact, in one 

 instance (73, p. 5) he states that he sent his only specimen of a 

 species of Hypoxylon to Dr. Schwaegrichen, of Leipzig. 



It seems rather certain from statements made by Schwaegrichen 

 in his introduction to Schweinitz's paper on the fungi of North 

 Carolina (72) that specimens of a large number, if not all, of the 

 species represented in that work were sent to him. The types or 

 parts of the types should therefore be found in Schwaegrichen's 

 herbarium. In spite of all their efforts, however, through correspond- 

 ence and personal search in Europe, the writers have been unable 

 to locate Schwaegrichen's collection of fungi. They found, however, 

 in the herbarium of the University of Leipzig a small bit of a speci- 

 men labeled "Sphaeria gyrosa Schwein. Juglans Fagus Carolina 



D. Schwaegrich. dd 5-21 K. Z." This specimen is evidently a part 

 of the original collection of Schweinitz which was sent to Schwaeg- 

 richen and given by him to Dr. Kunze. The host is apparently 

 neither Juglans nor Fagus, but seems to be Quercus. It may be 

 noted in this connection that in spite of diligent search by the 

 writers and various other collectors no specimen of Endothia has 

 yet been found on Juglans in this country. Neither have the writers 

 been able to find any specimen in the various herbaria examined. 

 They have concluded, as a result of their studies, that the mention 

 of Juglans by Schweinitz was an error in the identification of the 

 host, which it is believed was really Quercus, the host upon which 



E. gyrosa is most frequently found in the South, and especially in the 

 vicinity of Salem. According to the American Code, 1 however, the 

 specimen which should be taken as the type in this case is the one on 



1 American Code of Botanical Nomenclature. Canon 14, b. Bulletin, Torrey Botanical 

 Club, vol. 34, p. 172. 1907. 



