Chardon : Pyrenomycetes of Porto Rico 



281 



The writer wishes especially to acknowledge his obligation to 

 Doctor F. J. Seaver and Doctor W. A. Murrill of the New York 

 Botanical Garden for their courtesy and kindness during two brief 

 visits there; to Mr. E. D. Colon, Director of the Insular Experi- 

 ment Station, and to Mr. J. Matz and Mr. B. Lopez, of the Plant 

 Pathology staff, for their cooperation in connection with this 

 work; to Doctor B. Fink, of Miami University, for having gen- 

 erously sent a set of his collections to the writer ; to Doctor F. L. 

 Stevens, of Illinois University, and Doctor C. R. Orton, of Penn- 

 sylvania State College, for courteous advice in correspondence. 

 Thanks are due also to Doctor C. Ferdinandsen and Doctor C. 

 Christendsen, of the University of Copenhagen, Denmark ; to 

 Doctor L. Romell, of the Royal Museum at Stockholm, Sweden, 

 and to Doctor C. Spegazzini, of LaPlata, Argentine, for having 

 supplied the writer with portions of type materials for examina- 

 tion in connection with this work. Finally, an expression of ap- 

 preciation is due to Professor H. H. Whetzel, of the Department 

 of Plant Pathology, Cornell University, for placing at the writer's 

 disposal all of his collections, and to Professor H. M. Fitzpatrick, 

 of the same department, under whose supervision the work has 

 been conducted, for valuable suggestions and cooperation, and for 

 the revision and correction of the manuscript. Thanks are also> 

 due to Mr. W. R. Fisher for the care taken in the preparation of. 

 the photographs which illustrate this paper. 



PERISPORIALES 



MlCROTH YRIACEAE 



Lembosia Lev. 



This genus founded by Leveille (19) was based on four species : 

 Lembosia tenella, L. 'macula, L. Drymidis and L. DendrochilL 

 Theissen (37) in his recent monograph considers L. tenella as the 

 type of the genus and creates a number of additional genera, re- 

 taining in the old genus Lembosia only those forms having a super- 

 ficial mycelium and paraphyses. He has reduced to synonymy 

 two Porto Rican species described by Earle (7, 8). It is in the 

 sense of Theissen that the genus is considered here. 



