A LIST OF THE PYRENOMYCETES OF 

 PORTO RICO COLLECTED BY H. H. 

 WHETZEL AND E. W. OLIVE 1 



Carlos E. Chardon 



The following list of Pyrenomycetes of Porto Rico is based on 

 material collected by Prof. H. H. Whetzel and Dr. E. W. Olive 

 during a brief stay at the Island in the spring of 1916. A de- 

 tailed account of their expedition need not be given here, since it 

 has been previously published. 2 Their attention was directed 

 mainly towards the rusts, but fungi belonging to other groups 

 were also collected. The Pyrenomycetes stand in second place 

 from the standpoint of the number of species collected. The 

 Uredinales have been studied by Dr. J. C. Arthur, 3 and recently 

 several papers have appeared dealing with some of the Pyreno 

 mycetes 4 ' 5 ' 6 . However, a detailed list of the members of this 

 group has not been published, and since many of them are dis- 

 cussed in the papers of Prof. F. L. Stevens and his students, it 

 has been relatively easy to identify most of the specimens, in as 

 far as they are known. 



All doubtful determinations have been excluded. Specimens 

 representing what are believed to be new species have been set 

 aside for further study. 



During the preparation of the list, help has been received from 

 a number of mycologists. I wish especially to acknowledge my 

 indebtedness to Prof. F. L. Stevens of the University of Illinois, 

 Prof. C. R. Orton of Pennsylvania College, Mr. C. G. Lloyd of 

 Cincinnati, Ohio, Prof. F. S. Earle of the Insular Experiment 

 Station at Rio Piedras, P. R., and Dr. F. J. Seaver of the New 



1 Two species of Hysteriales are included. 



2 Brook. Bot. Gard. Rep. 5: 117-121. 1916. 



3 Mycologia 9: 55-104. 1917. 



4 Mycologia 11: 163-167. 1919. 



5 Mycologia 12: 93-98. 1920. 



6 Mycologia 12:206—267. 1920. 



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