738 



Closely allied to D. tuberculosa, but has the sporidia rather 

 narrower, and the circuniscribing line very faint and not penetrating 

 the wood as in that species. 



Page 438. — After Diap6rthe Crataigi, insert — 



D. acervkta, (E. & E.) 



Diatrype acervata, E. & E. Journ. Mycol. IV, p. 75. 

 Exsicc. Ell. & Evrht.N. A. F. 2d Ser. 2124. 



Stromata small {\ mm.), tobacco brown, becoming black, soft, 

 either single or oftener in compact groups, erumpent in the center of 

 elliptical (J-4 cm. long), dirty-white, dead spots with a definite, dark 

 red-brown border. Perithecia subcircinately arranged, 5-10 in a 

 stroma, white inside, 75-100 /i diam., subglobose, with a short, sub- 

 cylindrical ostiolum which is hardly discernible on the surface of the 

 stroma. Asci oblong, 35-40 x 7-8 //, without any distinct paraphyses. 

 Sporidia biseiiate, oblong-cylindrical, slightly curved, hyaline, obtuse, 

 slightly constricted in the middle and uniseptate, 12-18x3 yt, exactly 

 resembling the sporidia of a Sphmrella. The clusters of stromata 

 I'esemble the sori of a Puccinia. 



On dead spots in living leaves of Yucca filamentosa, New- 

 field, N. J. 



D. furfuracea, (Fr.) 



SphcEria furfuracea , Fr. S. M. II, p. 409. 



Irregularly circinate. Perithecia globose, surrounded by a bran- 

 like substance. Ostiola very short, joined together, obsoletely promi- 

 nent. Asci cylindrical. Sporidia (sec. Cke.) uniseptate, narrow- 

 elliptical, hyaline, 25-30x11 //. 



On branches of Tilia, Pennsylvania (Schw.). 



Page 458. — After Diap5rthe Murrkyi, insert — 

 D. claviceps, E. & E. (in Herb.) 



Perithecia buried in the wood, globose, |-1 mm. diam., scattered 

 or subseriately arranged, the separate groups surrounded by a black 

 line penetrating the wood. Ostiola erumpent, cylindrical, rough, 

 brittle, black, subflexuous, mostly tuberculose-enlarged at the base and 

 somewhat swollen at the tips, \-\ mm. long. Asci clavate, 35-45 x 

 41-5 II. Sporidia biseriate, oblong, hyaline, uniseptate, constricted at 

 the septum, 4-nucleate, 1 1-13 x 3J-4 //. 



On decorticated, partly decayed wood of Ostrya Virginica, Lon- 

 don, Canada (Dearness). 



