453 



Habit that of LcptoKpliwria arundinacea. Very different from 

 Sphceria (Diplodia) Zea . Sehw.'' 



On dead culms of Zea 3If(ys, Cincinnati, Ohio (Lea). 



On account of the raised spots, and broad-conical ostiola, this 

 seems distinct from D. Keller manniana, Winter, and from D. inron- 

 grna, E. &: E. 



D. incongrna, E. & E. (in Herb.) 



Diaporthe Kellet manniana, Winter, in Jouru. Mycol. II, p. 100 (not Bull. Torr. 

 Bot. Club. X, p. 49). 



Stroma broadly effused. 5 or more centimeters long and nearly 

 surrounding tlie culm, which it penetrates and blackens on the inner 

 surface: the outside is also finely mottled with narrow-elliptical, dark- 

 colored spots about 1 mm. long, lighter in the center, and so numerous 

 and closely confluent as to cause the surface of the culm to appear, at 

 first sight, as if uniformly blackened. The whole area is limited by ;i 

 distinct black line, visible on the surface of the culm, especially at the 

 ends, where the stroma is often prolonged in narrow strips. Peri- 

 thecia scattered or subcespitose, sunk in the substance of the culm. 

 \-\ mm. diam., their long (1 mm.) rather crooked, black ostiola pro- 

 jecting, either singly or in little tufts of two or three together. As<-i 

 lanceolate, about 40x7-8 //. Sporidia biseriate, oblong-fusoid. 4- 

 nucleate and yellowish, becoming constricted and uniseptate, ends 

 rather obtusely pointed. 7-1 Ox 3 IJL. 



On decaying culms of Ze<t J////.S. Kentucky and Louisiana. 



The distinct stroma will distinguish this from D. Kellermanni- 

 Una. Winter, and tin 1 cylindrical ostiola. from D. Maydis, Berk. 



D. Eellermanniana, Winter, Bull. Torr. Bot. Club, X, p. 49. 



Stroma none. Peritliccia deeply immersed, depressed-globose. 

 membranaceous, black, 210-260 // diam., eruinpent. Asci ol)lonu-- 

 fusoid, 8-spored, 35-40x5-7 IJL. Sporidia oblong, often inequilateral, 

 rounded or sultacute at the ends, uniseptate in the middle, not con- 

 stricted, 4-guttulate, 9-11 x3-3J u.. 



On decaying culms of Zea Jfays, Lexington, Ky. (Kellerman). 



This seems (jiiite distinct from either of the two preceding specie-. 



D. Gladioli, E. & E. Journ. Mycol. II, p. 101. 



Exsicc. E)ll. & Evrht. N. A. F. ad Ser. 1794. . 



Perithe-cia sunk in the substance of the stem just belo\v the epi- 

 dermis, which is blackened above them, forming elliptical, definitely 

 limited spots '2-3 mm. long or, by confluence, 1 cm. or more. Peri- 



