100 



Mycologia 



The task of sorting, preparing, and labeling approximately 

 twenty-five thousand specimens for this distribution has been con- 

 siderable, and the Herbarium is under great obligations to Mr. 

 Seymour, Mr. Piguet, and Miss Nickerson, of the Herbarium 

 Staff, for the great amount of careful and painstaking work which 

 has been necessary. Mr. Seymour has himself printed and revised 

 the labels, an undertaking which of itself has been laborious, ex- 

 acting, and time-consuming, and in his case to a large extent a 

 labor of love for the purpose of forwarding the accomplishment of 

 Dr. Farlow's original intentions. 



The determinations of the species included in this set are almost 

 wholly those made by Dr. Farlow, either personally or after sub- 

 mission to other experts, and in only a few instances has it been 

 thought desirable to make slight changes, since the extent to which 

 they represent his expert opinion as to identities forms perhaps 

 the most important element of its value. It should be remembered, 

 nevertheless, that some of these determinations may have been pro- 

 visional in his mind, and subject to further verification or modifi- 

 cation, had he been able to go over them for final revision before 

 their distribution; and it is very probable that errors, which he 

 would himself have corrected, may be thus perpetuated. 



For the convenience of those who make a practice of binding 

 their sets of exsiccati in preference to distributing them in the 

 oubliette of a General Herbarium, title pages and lists of each of 

 the six volumes have been printed and distributed with the sets. 



No. 15. Diatrypella ciliatula (Fr.) Farlow, nov. comb. 



The Sphaeria ciliatula of Fries, 1 placed in Calosphaeria by Kars- 

 ten and represented in the Farlow Herbarium by various collec- 

 tions from New England and Europe, appears to be rightly in- 

 cluded in Diatrypella, 



No. 73. Pleomassaria maxima Ell. & Ev. 



The melanconeaceous condition, Sporidesmium Fusus B. & C, is 

 present in many of the specimens, some of which are over-mature. 

 The material has been examined by Dr. Shear, who confirms the 

 identity of this form with his P. Magnoliae. 



1 Syst. Myc. 2: 406. 1823. 



