371 



On brush of an old broom-corn broom, Greenbush, N. Y. 



The ostiola are so obscure that they can with difficult v be seen. 



t, 



L. Michdttii, (West.) 



Spluzria Miehottii, West. Bull. Soc. roy. hot. Belg. II. Ser. torn. VII, No. 52. 

 Spfuzrellu Michottu, Awd. Myc. Eur. p. 18, tab. VI, fig. 75. 

 Leptosph&ria tiimna, Sacc. F. Ven. Ser. II, p. 319. 

 Leptospluzria Miehottii, Sacc. F. Ital. tab. 279. 

 Exsicc. Plowr. Sph. Brit. 267, 268. Rav. F. Am. 750. 



Perithecia scattered or gregarious, at first covered, afterwards 

 erunipent, depressed-spherical, with a, short, sharp, conical ostiolum. 

 black, JCO-120 // diam. Asci cylindric-clavate, icimded at the apex, 

 with a short, thick stipe, 8-spored, 50-55 x 12-15 JJL. with scanty, fili- 

 form paraphyses. Sporidia biseriate, oblong-cylindrical, straight, 

 rounded at the ends, biseptate and constricted at the septa, olive- 

 brown, 15-18 x 3|-4| ft, cells mostly nucleate. 



On dead stems of June us, New England (Blake), on Carex, New 

 .Jersey and Georgia. 



L. arimdinacea, (Sow.) 



Sphccria a> undinacea, Sow. Eng. Fung. tab. 336. 

 Splitzria Godini, Destu. Ann. Sci. Nat. III. Ser. torn. V, p. 49. 

 Leptosphteria Godini, Awd. Tausch-verein, 1866, p. 4. 

 Pleospora amndinacea, Fckl. Symb. p. 137. 

 Melogramma a i undinacea^ Niessl. in Rab. F. E. 1840. 

 Leptosphceria ar undinacea, Sacc. Syll. 3081, F. Ven. Ser. II, p. 320. 

 Heptameria arundinacea, Cke. Syn. 4849. 

 Exsicc. Rab. F. E. 1840. Rehm Asc. 193. Thum. M. U. 1256. M. March. 259. 



Erumpent, linear, black, with scarcely any stroma. Perithecia 

 in one or two series, connate, minutely papillate, black inside. Asci 

 elongated-clavate. with branching paraphyses, 8-spored, 80-88x10- 

 12 fjL. Sporidia snll)iseriate, fusoid, 3-septate, mostly straight, 24-3(> 

 x 6 //, at first hyaline, then honey -colored. Spermatia, in perithecia 

 like the ascigerous perithecia, oblong, uniseptate, hyaline. Pycnidial 

 perithecia the same, stylospores fusiform, curved, 3-5-septate. cell- 

 nucleate, yellow, 26-56 x 6 /*. 



On Arundinaria, South Carolina. 



L. hystcrioides, E. & E. Bull. Wash. Coll. 1884, p. 4. 



Perithecia globose, 165 // diam., covered by the blackened cuticle 

 which is pierced by the obtusely-conical ostiolum. Often several ^eri- 

 thecia are confluent in the direction of the longer axis of the leaf so as 

 to resemble closely some minute Hysterium and this resemblance is 

 increased when, as often happens, the epidermis splits along the line of 

 the ostiola. Asci oblong or oblong-cylindrical, 85-112x12-15 : 



