4o;) 



Sow into iVii acute liiise, roUnded and obtuse above, obscul-ely par- 

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

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

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

 with a cylindrical^ hyaline, straight or curved, subpersisteut appendage 

 12-20 x5-6 p.. The ])erithecia do not penetrate so as to be visible on 

 the inner surface of tlie bark. 



On bark of dead Plntanus. London, Cunada (Dearness). 



FAMILY. CLYPEOSPH^ERIEJil. 



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

 Ijlackened, 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 \vell as over 

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

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

 oblong or filiform, hyaline or brown, eontinuous or l'-3-septates 



€LYPEOSPHiBRlA, PckU 



Symb. p. 11^. 



Perithecia scattered, rarely confluent, covered by th(; epidermis, 

 submembranaceous, covered above by a thin, epidermal, stromatic 

 shield. Ostiolum crumpent, 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, crumpent 

 ostiolum barely visible. Asci clavate-cylindrieal, 40-50 x 7-8 p, par- 

 aphysatc, 8-spored. Sporidia overlapping-uniseriate, oblong-fiisoid, 

 ■3-septate and constricted at the middle septum, 12-1-5 x-3|-4i p, pale 

 brown, finally dark brown. 



On exposed, weather-beateU \\'Ood -of deciduous trees, PennsyK 

 vania (Eckfeldt), Kansas (Cragin). 



The stromatic shield is ver)' obscure, so that this might perhaps 

 ij,o in LeptosphtBria. 

 52 



