1893.] NATURAL SCIENCES OF PHILADELPHIA. 457 



Perithecia erumpent-superficial, black, subglobose, i mm. diam. 

 Sporules fusoid, curved, hyaline nucleate, 20x2-22//. Perithecia 

 rather sparingly clothed with stout, spreading, rather short, black 

 bristles. 



Sphaeropsis Mori E. &E. 



On twigs of Morus, London, Canada. July, 1893. (J. Dearness). 



Perithecia evenly scattered globose, 200-250;/ diam. , buried in 

 the bark which is uniformly blackened within, raising the epidermis 

 into pustules which are ruptured at the apex. Sporules oblong, pale 

 brown, 18-22x7-8//. 



Differs from S. valsoidea C. & E., in its smaller, evenly scattered 

 perithecia and sporules nearly twice as long. 



Hendersonia pustulata E. & E. 



On old hickory nuts lying on the ground, Newfield, N. J. May, 

 1893. 



Perithecia scattered, pustuliform, A-l mm. diam., flattened, seated 

 on the inner surface of the nut. Sporules narrow-elliptical, 3-septate, 

 10-12 x 3-3 i//., not constricted, pale brown, inner cells darker. 

 Basidia about as long as the sporules. 



Zythia boleticola E. & E. 



On Paxillus (Boletinus) porosus Berk. Newark, Del. July, 1893. 

 (A. Commons). 



Perithecia scattered, pustuliform, small (200;/ diam.), thin-membra- 

 naceous, yellowish-flesh-color becoming amber color. Sporules hya- 

 line, oblong or ellptic-oblong 5-15x4-5 ". 



Stagonospora pedunculi E. & E. 



On old peduncles of Liriodendron Tidipifera, Nuttallburg, West 

 Va. July, 1893. (L. W. Nuttall, No. 119). 



Perithecia gregarious, pustuliform, about § mm. diam., covered 

 by the blackened epidermis. Sporules cylindrical, 18-22 x 2-2?//., 

 multinucleate, hyaline, straight. 



Septoria Lespedezae E. & E. 



On leaves of Lespedeza, London, Canada, July, 1893. (Dear- 

 ness No. 2134). 



Hypophyllous, on small (1-2 mm.), subangular or suborbicular, 

 rather indistinctly limited, grayish-brown spots. Perithecia, buried, 

 30 



