378 



i Iliform ostiohi. Asci clavate-cylindrical. Sporidia biseriate, fusiform, 



7-srptat<\ bright In-own, at first nucleate. 



On liusks (}\' Zea J/'///*, (ininsvillo, Fla. 

 No measurements are given. 



L. zizaniiecola, (B. & C.) 



Sphesria zizanicecola, B. & C. Grev. IV, p. 145. 

 Sp/u?)-ia > iinosa, Schw. (Herb.) ^ 



Leptospheeria zizani&cola, Sacc. Syll. 3175. 

 [fiplameria zizaniczcola, Cke. Syn. 4969. 



Forming little swollen patches, slightly discoloring the cuticle. 

 Asci elliptical, containing four linear, straight or sigmoid, 5-6-septate 

 sporidia 33-50 p. long. 



On Zizania, (Carolina)? 



The perithecia are entirely buried. Wo have seen no authentic 

 specimens. 



L. culmifraga, (Fr.) 



Sphczria culmifraga, Fr. S. M. II, p. 510. 

 Leptosphcsria culmifraga, Ces. & De Not. Schema, p. 61. 

 Pleospora culmifraga, Fckl. Syrab. p. 137. 



Exsicc. Fckl. F. Rh. 2245 Rehm Asc. 195, 700, 784, 785. Rab. F. F,. 1552. Ijn. Fungi, 

 Hung. 74, 366. M. March. 2354, 3034. 



Perithecia scattered or seriate, at first covered, afterwards erum- 

 pent through cracks in the epidermis, subcompressed, mostly elliptical, 

 sometimes spherical, with a short-conical ostioluni, black, glabrous or 

 with a few brown, mycelial threads around the base, 300-400 x 200- 

 250 //. Asci clavate, 8-spored, 80-100 //. long, 12-14 /* broad, par- 

 aphysate. Sporidia 2-3-seriate above, fusoid-elongated, mostly curved, 

 7-9-septate, the third cell generally a little swollen, slightly constricted 

 at the septa, yellow, 35-46 x 5-7 p.. 



On Panicum, New England (Berk, in Grev.), on culms of Phleunt 

 l'atense, New Jersey, on stems of grass, New York (Peck), and on 

 Panicum Curtisii (culms), Louisiana (Langiois). 



C. On cryptogamous plants. 

 L. Marcyensis, (Pk.) 



Sphczria Marcyensis, Pk. 3ist Rep. p. 51. 

 Leptosphferia Marcyensis, Sacc. Syll. 3H3- 

 Heptameria Marcyensis, Cke. Syn. 4930. 



Perithecia minute, punctiform, covered by the epidermis, which 

 is ruptured by the distinct, slightly prominent, blunt ostiola. Asci 

 oblong-cylindrical, sessile. Sporidia crowded, subfusiform, blunt, 

 slightly colored, 3-septate, 25-28 x7| /*, the cells generally nucleate. 



