38 



Mycologia 



tion. It is not unlikely that it may be related to Claviceps nigri- 

 cans Tul. occurring on Eleocharis and Scirpus, which are, I 

 believe, the only members of the Cyperaceae at present recorded 

 as being attacked by Claviceps. In this connection, mention may 

 be made of a fungus described by Griffiths in the Bulletin of the 



Fig. i. Sclerotia of Claviceps on Carex stellulata angustata. X f. 



Torrey Botanical Club, Vol. 29, p. 300, and referred doubtfully 

 to Claviceps. The sclerotial bodies there described were found, 

 not on the reproductive organs, but inside the culms of the host, 

 which was Carex nebraskensis Dewey. Through the courtesy of 

 Dr. Griffiths I have been enabled to examine his specimens, which 

 I find are clearly distinct from the ones under consideration here. 

 They proved to be Sclerotium sulcatum Desm. (Ann. Sci. Nat. 

 III. 16: 329. 1851), with the conidial stage Epidochium ambiens 

 Desm. (See Brefeld, Mycol. Unters. 10: 317). The detached 

 sclerotia of the fungus certainly resemble ergot grains very 

 closely. The fungus of Dr. Griffiths was kindly determined by 

 Mr. H. T. Giissow, Dominion Botanist. 



