494 Tracy and Earle : New Fungi from Mississippi 



1 



SOROSPORIUM RYNCHOSrORAE P. Ilcnil. 



On Rynchospora scmiphimosa, Biloxi, Miss., June, 1898, S. M. 



Tracy, no. 5225. 



This South American smut is new to the United States. 



Cerebella Anthaenantiae 



Destroying the ovaries: stomatic mass globose, 3-5 mm. in 

 diameter at first reddish-orange, becoming velvety black with the 

 maturity'of the dark colored spores : glomcrules subglobose, com- 

 posed of several, sometimes 10 or 12. connate spores that are quite 

 variable in size, the larger 20-24 a ; separate spores ovoid or an- 

 gular from pressure, fuscous, average size 10-12// X 8-10//. 



On Anthacnantij nifa, Ocean Springs, Miss., fall of 189O. 

 Biloxi, Miss., Oct., 1894 and 1898, S. M. Tracy, no. 5219. 



This form was mentioned in Bull. Miss. Ag. Kxp. Sta. 34 : 94 



'P 



Cerebella Panici 



Infestincr the ovaries : stomatic mass oval, i . 5-3 mm. often cover- 

 ing the glumes, nearly black throughout: glomerules depressed- 

 spherical, composed of 3-5 spores, dark-olivaceous smooth or 

 minutely roughened, 10-12// x 8-10 //, remains of pedicel usually 

 distinct ; spores ovoid, angular on inner sides, about 8x6 //. 



OnPaniciim vlrgatuui, Ocean Springs, Miss., 1891 ; Biloxi, 

 Miss., Oct., 1898, S. M. Tracy, no. 5217. 



^^lentioned in Bull. Miss. Ag. Exp. Sta. 34 : 94 and there re- 



^/ 



Cerebella Sorgbi 



Infesting the ovaries : stomatic mass globose, 5-6 mm. in di- 

 ameter enveloping the glumes, dark or black throughout: glom- 

 erules 'subglobose, usually composed of three spores, smooth or 

 slic^htly roughened, brown, 8-10 // in diameter; spores ovoid, 0- 



8 X 5-6 11. 



o 



Jack 



y 



was referred to C. Andropo-onis in Bull. Ala. Ag. Exp. Sta. 80 : 

 207, probably belongs here. 



Diplodina quercuum (Cke.) Tracy & Earle 



Ilypophyllous, without spotting or discoloring the leaves : perl- 

 thecia subsuperficial, solitary or gregarious, subconic, about 150 X 



