128 J(Jl KNAL OF AGKICULTUEE OF P. E. 



from this viewpoint, but there doubtless are others. Dr. King in 

 the paper in question (49) mentions Epidermophyton cruris {tinea 

 cruris), Cladosporium Mansoni (black ringworm), and Malassezia 

 tropica {tinea flava), all causing skin diseases. 



Acknowledgments. 



Acknowledgment must be made for help received during the 

 preparation of this list from a considerable number of sources. Sev- 

 eral mycologists have worked over portions of the collections of the 

 Insular Experiment Station and furnished determinations. These 

 have included Dr. F. J. Seaver, and Dr. Wm. A. Murrill, New York 

 Botanical Garden ; Dr. E. A. Burt, Missouri Botanical Garden ; Prof. 

 C. G. Lloyd ; Dr. W. C. Sturgis ; and Dr. C. R. Orton, Pennsylvania 

 State College. I am also indebted to Dr. Seaver for permission to 

 use data from a preliminary list of the Porto Rican fungi deposited 

 in the portion of the herbarium of the New York Botanical Garden 

 under his charge, as well as for other favors. Drs. Burt, Sturgis. 

 and Orton and Professor Lloyd have examined and made suggestions 

 as to corrections in portions of the manuscript submitted to them. 

 Mr. H. E. Thomas, formerly of the Mayagiiez Experiment Station, 

 has furnished information from his notes. From Dr. Olive and Pro- 

 fessor Whetzel I have received a set of the specimens collected by 

 them during their visit to the Island, in so far as the material has 

 been worked up. This has afforded a considerable amount of addi- 

 tional data. 



To Dr. Stevens of the University of Illinois 1 am particularly 

 indebted for copies of his publications on Porto Rican fungi, and 

 for the loan of a card index of fungi and hosts, based on his collec- 

 tions. 



Plan of the work. 



It is the aim of the present list to record the fungi reported as 

 occurring in Porto Rico, together ^nth the hosts or substrata, the 

 localities in which they have been collected, the name of the respec- 

 tive collectors, and all bibliographical citations. When the collector 

 has been other than a member of the staff of the Insular Experiment 

 Station, past or present, his name is given in parenthesis following 

 the localities. Semicolons, it will be noted, are used to separate the 

 work of different collectors. Our own collections are cited first, fol- 

 lowed by such others as have been made. Wliere more than one col- 

 lection has been made in the same locality the earliest in point of 



