40!) 



low into an acute base, rounded and obtuse above, obscurely par- 

 aphysate, 4-8-spored. Sporidia inordinate, clavate-oblong or simply 

 oblong, slightly curved and subinequilateral, 25-50x18-22 u, 2-3- 

 (mostly 2-) septate, hyaline at first, then olive-brown, ends obtuse, each 

 with a cylindrical, hyaline, straight or curved, subpersistent appendage 

 1 2-20 x 5-6 ji. The perithecia do not penetrate so as to be visible on 

 the inner surface of the bark. 



On bark of dead Platanus, London. Canada (I)eamess). 



FAMILY. CLYPEOSPH^RIE^l 



Perithecia buried, without any proper stroma, but covered by a 

 blackened, shield-like layer, which is sometimes sharply limited, and 

 sometimes with an indefinite outline, and consists of the slightly altered 

 and more or less blackened outer layer of the bark, leaf, or wood. This 

 dark layer is sometimes also found under the perithecia as Well as over 

 them, or even enveloping them on all sides. Asci cylindrical or clav- 

 ate-cylindrical, 8 spored, mostly paraphysate. Sporidia variable, 

 oblong or filiform, hyaline or brown, continuous or 1-3-septate, 



CLYPEOSPHJMA, Fckh 



Symb. p. 117. 



Perithecia scattered, rarely confluent, covered by the epidermis, 

 ^ubmembranaceous, covered above by a thin, epidermal, stromatie 

 >shield. Ostiolum erumpent, papilliform, short. Asci elongated, 8-spored, 

 Sporidia uniseriate, oblong or oblong-cylindrical, triseptate, obtuse, 

 often curved, brown, 



CI. sanguinea, E. & E. (in Herb.) 



Perithecia gregarious on red, indefinite spots, minute (100 p.). 

 buried in the red-stained surface of the wood, the minute, erumpent 

 ostiolum barely visible. Asci clavate-cylindrical, 40-50 x 7-8 /*, par- 

 aphysate, 8-spored. Sporidia overlapping-uniseriate, oblong-fusoid. 

 3-septate and constricted at the middle septum, 12-1-5 x3|-4j n : pale 

 brown, finally dark brown, 



On exposed, weather-beaten wood of deciduous trees. Pennsyl- 

 vania (Eckfeldt), Kansas (Cragin). 



The stromatie shield is very obscure, so that this might perhajx* 

 go in Leptosphceria, 

 52 



