MYCOLOGIA 



Vol. XIV NOVEMBER, 1922 No 6 



NOTES ON SOME SPECIES OF COLEO- 

 SPORIUM— II 



George G. Hedgcock and N. Rex Hunt 

 (With Plates 22 and 23) 

 COLEOSPORIUM IPOMOEAE 



Coleosporium ipomoeae (Schw.) Burrill was first described in 

 the uredinial stage by Schweinitz 1 in 1822, as Uredo ipomoeae; 

 Burrill 2 in 1885 described the telial stage and placed the fungus 

 in the genus Coleosporium. The aecial stage was discovered by 

 the senior writer near Luray, Va., on Pinus echinata in 1 914, and 

 it was described 3 and the proof of its connection with the ure- 

 dinial and telial stages was published in a brief note in 1917. 4 



Inoculations with Coleosporium ipomoeae have been made dur- 

 ing 191 5 to 1919 as follows: 



Sixteen sets of inoculations were made with aeciospores from 

 aecia on Pinus echinata collected from the following localities: 

 Mont Alto, Pa; Luray and Petersburg, Va. ; Asheville, N. C. ; 

 Etowah, Tenn. ; Clearwater and Columbia, S. C. ; Atlanta, Co- 

 lumbus, and Macon, Ga. ; Auburn and Selma, Ala. ; and Tex- 

 arkana, Ark. Plants as follows were inoculated : 1 Amsonia 

 ciliata, 2 Aster conspicuus, 1 A. longifolius, 3 Colony ction acu- 



1 Schweinitz, L. D. Synopsis fungorum Carolinae superioris. Schr. Nat. 

 Ges. Leipzig 1: 70. 1822. 



2 Burrill, T. J. Parasitic fungi of Illinois. Bulletin Illinois State Lab- 

 oratory 2: 217, 218. 1885. 



3 Hedgcock, Geo. G., & Hunt, N. Rex. New species of Peridermium. My- 

 cologia 9: 239, 240. 1917. 



4 Hedgcock, Geo. G., & Hunt, N. Rex. The Peridermium belonging to 

 Coleosporium ipomoeae. Phytopathology 7: 67. 19 17. 



[Mycologia for Sept. (14:235-295) was issued Sept. i, 1922] 



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