247 



dermis, membranaceo-coriaceous, collapsing, smooth or bristly. Asci 

 and sporidia as in Nitschkia. 



We have modified Saccardo's generic characters so as to embrace 

 only species with scattered perithecia. The evidently close relation- 

 ship to Nitschkia forbids their removal to another family. 



C. corticata, E. & E. Proc. Acad. Nat. Sci. Phil., July, 1890, p. 222. 



Perithecia scattered, globose, about \ mm. diam., closely en- 

 veloped, except the papilliform ostiolum and the apex, by the adherent 

 epidermis, and clothed with a thin coat of brown, branching,, sparingly 

 septate hairs about 3 ju thick. Asci (p. sp.) about 35 x 7 /i, 8-spored. 

 Sporidia crowded-biseriate, 2-nucleate, hyaline, moderately curved, 

 obtuse, 10-14x3 //. The perithecia soon collapse down to, or a little 

 beyond the part embraced by the epidermis, and become strongly 

 concave. 



On barl^of dead Madura aurantiaca, Missouri (Demetrio, 272) 



C. fusariospora, E. & E. Journ. Mycol. IV, p. 65. 



Exsicc. EU. & Evrht. N. A. F. 2d Ser. 1957. 



Perithecia scattered, erumpent, about 165 fi diam., collapsing to 

 cup-shaped, black, with a papilliform ostiolum. Asci clavate-cylin- 

 drical, 50 x 7 /*, with filiform paraphyses. Sporidia biseriate, arcuate- 

 fusiform, continuous, 18-22 x 2 J p., ends acute. 



On bark of cottonwood, Kansas (Egeling). 



C. (?) chiliopyxis, (B. & C.) 



Sphceria chiliopyxis, B. & C. Grew IV, p. 141. 



" Extremely minute, gregarious, globose, bright. Sporidia hya- 

 line, slightly sausage-shaped." 

 On rotten logs, Carolina. 



C. exilis, (A. & S.) 



Sphceria exilis, A. & S. Consp. p. 44. 

 Nitschkia exilis, Fckl. Symb. p. 44. 

 Coelosphceria exilis, Sacc. Syll. 379. 



Perithecia gregarious, superficial, seated on a thin, scanty, whitish, 

 cottony subiculum, membranaceo-coriaceous, 150-250 //diam., globose, 

 soon collapsing to shallow cup-shaped, sparingly clothed with black, 

 continuous bristles, 60-80 x6//. Ostiolum inconspicuous. Asci (p. sp.) 

 25-30x4 //long. Sporidia subbiseriate, hyaline, cylindrical, curved, 

 3-5 x 1 p. 



On Prunus serotina, Quercus Montana, and Comus florid a. in 



