ENDOTHIA PARASITICA AND RELATED SPECIES. 6 



The present paper presents the results of several years' field and 

 laboratory study of the species of Endothia. This includes the study 

 of practically all the herbarium material of this genus preserved in 

 the principal herbaria of Europe and America; also field and lab- 

 oratory studies of over 600 new collections from various localities 

 and hosts in America, Europe, and Asia. Over 4,000 cultures have 

 been studied and about the same number of inoculations made. 

 These studies include the systematic relations of the species of 

 Endothia and their physiological behavior on various culture media 

 and under various conditions of light, moisture, and temperature; 

 also inoculation experiments with the various species on various hosts. 



The writers wish to record here their grateful acknowledgment 

 and thanks for opportunities to examine specimens and for assistance 

 rendered by various ideologists and pathologists and directors and 

 curators of botanical gardens and museums, especially the following : 

 Prof. O. Comes, Naples; Prof. Komualdo Pirotta, Prof. Giuseppi 

 Cuboni, and Drs. E. Pantanelli and L. Petri, Eome; Prof. P. Bac- 

 carini, Florence ; Prof. P. A. Saccardo, Padua ; Dr. G. Briosi, Pavia ; 

 Dr. J. Briquet, Delessert Herbarium, Geneva; M. G. Beauverd, 

 Boissier Herbarium, Geneva; Prof. L. Jost, Strasburg; Prof. W. 

 Pfeffer, Leipzig; Dr. G. Linclau, Berlin; Dr. J. AY. C. Goethart, 

 Leiden ; Prof. H. O. Juel, Upsala ; Dr. P. Hariot, Paris ; Sir David 

 Prain, Kew; Dr. A. B. Eendle, British Museum; Prof. I. B. Balfour, 

 Edinburgh; Prof. T. Petch, Peredeniya, Ceylon; Dr. C. Spegazzini, 

 La Plata, Argentina; Dr. W. G. Farlow, Llarvard University; Dr. 

 W. A. Murrill, New York Botanical Garden ; Mr. Stewardson Brown, 

 Philadelphia Academy of Science; Dr. G. T. Moore, St. Louis 

 Botanical Garden; Prof. E. Bethel, Denver, and Drs. G. P. Clinton, 

 P. J. Anderson, and F. D. Heald. The writers have also received 

 specimens and cultures from numerous other colleagues which have 

 been of great assistance and are duly appreciated. 



THE GENUS ENDOTHIA. 



The genus Endothia was established by Elias Fries in 1849 (33, 

 pp. 385-386), as follows: 



(X. Endothia. Fr.*) 



* Colore rubro fulvove, habitu Tuberculariae, peritheciis cellulosis difformi- 

 bus pallidis, ascis diffluentibus, facile distinctum genus, nobis exoticum, sed 

 jam in Europa australi obvium v. c. Sph. gyrosa Schw. — et subgenus, tuber- 

 culo unilocular^ sistit &. Tubercularia Dec. Omnium horum generum char- 

 acters proxime plenius exhibeamus, examinatis multis speciebus exoticis. 



The description of the genus transcribed here was published as 

 a footnote in the work cited and was evidently based on the specimens 

 contained in Fries's herbarium at the time the book was written. 



