700 



the specimen. The spec, labeled H. gramineum, Fr., (No* 2108), is 

 also some indeterminable, sterile thing. 



H. Polygonati, Schw. Syn. N. Am. 2115. 



This is Vermicularia Polygonati, Schw. Syn. N. Am. 1847. 



H. OsmundsB, Schw. Syn. N. Am. 2113, is Leptostroma litigiosum, 

 Desm. 



H. Pteridis, Schw. Syn. N. Am. 2114, is Leptostromella filicina, 

 Sacc. Syll. Ill, p. 660, (Cryptosporiwn Jilicinum, B. & C. Grev. II, 

 p. 84.) 



H. samarae, Fr. (2112). 



This spec, is apparently Phoma Samararum, Desm., but entirely 

 sterile. 



H. rimincola, Schw. Syn. N. Am. 2086. 



The specimen has the appearance of some undeveloped Dothidea, 

 and evidently is not a Hysterium. 



H. Sambuci, Fr. (2098). 



The specimen can not be a Hysterium; it is apparently some 

 undeveloped sphaeriaceous fungus, and is without fruit of any sort. 



H. stictoideum, C. & E. Grev. VII, p. 7. 



Exsicc. EU. N. A. F. 571. 



This is Stictis hysterina, Fr. 



OSTREiON,* Duby. 



Mem. sur la Tribu des Hyst. p. 21. 



Perithecia conchiform, superficial, subpedicellate, longitudinally 

 striate. Asci large, 4-spored, paraphysate. Sporidia very large, fusoid 

 multiseptate, colored. 



0. Americanum, Duby, 1. c. p. 22, tab. I, fig. 1. Cooke in Grev. 

 IV, pi. 67. 



Scattered, black and shining, obsoletely transversely striate, 

 shaped like an oyster-shell, margin incurved. Asci cylindrical, 350- 

 400 x 30 fjt, 4-spored. Sporidia uniseriate, broad-fusoid, constricted in 

 the middle, opake, reddish-brown, 12-20-septate, 90-100 x 25-27 /jl. 



*Name changed from Ostreichnion. 



