Chardon : Pyrenomycetes Collected in Porto Rico 317 



York Botanical Garden. Finally, an expression of my appre- 

 ciation is due to Prof. H. M. Fitzpatrick, who suggested the pub- 

 lication of the list and who assisted in the preparation of the 

 manuscript, and to Prof. H. H. Whetzel, who has placed at my 

 disposal all of his material. 



A total of 112 specimens, representing 65 species, is listed 

 below. The date of the collection has been omitted in all cases. 

 Following the citation of the locality, the accession numbers ap- 

 plied to the specimens by the collectors are given. 



I. HYSTERI ALES 



1. Lembosia Coccolobae Earle.. 



On Coccolobis uvifera. Mayaguez, 522, 523. 



2. Lembosia diffusa Winter. 



On Miconia prasina. Maricao, 665. 



II. PERISPORIALES 



1. Erysiphaceae 



So far as known, the members of this group never develop perithecia 

 under the climatic conditions of the island, and are known only in the oidium 

 stage. Hence, only tentative determinations based on the host can be made. 

 It has seemed best, therefore, to omit them from the present list. 



2. Perisporiaceae 



3. Dimerium grammodes (Kuntze) Garman. 



On Crotalaria retusa. Anasco, 663; Mayaguez, 648, 662. 



On Meibomia barbata. Anasco, 652; El Duque, 661. 



On Phaseohis adenanthus. Mayaguez, 660; Tanama River, 659. 



On Vigna repens. Mayaguez, 536, 653. 



4. Dimerium Stevensii Garman. 



On Cordia corymbosa. Mayaguez, 637. 



5. Meliola Andirae Earle. 



On Andira jantaicensis. Mayaguez, 583. 



6. Meliola bicornis var. Calopogonis Stevens. 

 On Calopogonium orthocarpum. Utuado, 614. 



7. Meliola Diffenbachiae Stevens. 



On Dfffenbachia sequine. Mayaguez, 585, 686. 



8. Meliola glabroides Stevens. 



On Sauvagesia erecta. Maricao, 616. 



9. Meliola Guareicola Stevens. 



On Guarea trichiloides. Mayaguez, 593. 

 10. Meliola Ipomoeae Earle. 



On Ipomoea batatis. Mayaguez, 605. 

 On Ipomoea' tiliacea. Mayaguez, 606. 



