738 



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

 narrower, and the circumscribing line very faint and not penetrating 

 the wood as in that species. 



Page 438. After Diaporthe Cratsegi, insert 



D. acervata, (E. & E.) 



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

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



Stromata small (J 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 it 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 /i, without any distinct paraphyses. 

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

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

 resembling the sporidia of a Sphcerella. The clusters of stromata 

 resemble 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, 25-30 x 11 ft. 



On branches of Tilia, Pennsylvania (Schw.). 



Page 458. After Diaporthe Murrayi, 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, J-l mm. long. Asci elavate, 35-45 x 

 4|-5 it. Sporidia biseriate, oblong, hyaline, uniseptate, constricted at 

 the septum, 4-nucleate, 1 1-13 x 3|-4 it. 



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

 don, Canada (Dearness). 



