WEST VIRGINIA GEOLOGICAL SURVEY 59 



CYTOSPORELLA Sacc. 



C. CARNEA E. & E., Bull., Torr. Club, 24:287 (1897). 



Stroma at first tuberculo-hemispherical and covered by 

 the epidermis, soon erumpent through the transversely or 

 laciniately ruptured epidermis, brown outside, white and 

 of firm consistence within (except the central portion), mul- 

 tilocular cells light-colored ; sporules elliptical, hyaline, con- 

 tinuous, 5-7 X 2.5-3 M- 



The stroma is about 1.5 mm. wide and i mm. high and 

 finally shrinks away from the ruptured epidermis and then 

 is more or less distinctly flesh-colored. 



On dead limbs of Castanea. Favette : near Nuttallburg, 

 ^larch, 1896 (Nuttall). 



CYTOSPORA Ehrenb. 



C. Celtidis E. & E.. Proc. Phila. Acad., 1894, 360. 



Type habitat : On dead limbs Ccltis occidenfalis, Feb. 2, 

 1894 (Nuttall, discov. 1358, 314). 



Stroma valsoid, flat, thin, 1.5 to 2 mm. diameter, only 

 penetrating the surface of the bark, multilocular, gray in- 

 side, raising the bark into small pustules and finally ruptur- 

 ing it, cells representing perithecia. Sporules allantoid, 6 



to 7 X I to 1.5 ;U,. 



C. Halesiae E. & E., Proc. Phila. Acad., 1894, 361. 



Type habitat : On dead limbs of Mohrodendron Caro- 

 limim (Halesia tctraptcra) . June 7, 1894 (Nuttall, discov. 

 1540). 



Stromata convex-conical, sunk in the bark, orbicular, about 

 I mm. diameter, white inside, unilocular, the inner surface 

 of the cavity lined with simple straight basidia about 15 r. 

 long, bearing the oblong-fusoid, hyaline, 2-nucleate, straight, 

 5 to 7 X I to 1.5 /i sporules, which are expelled through a 

 single orifice perforating the raised epidermis. 



This probably is the spermogonial stage of Diaporthe 

 Halesiae or D. fctraptcrac, both of which are found in com- 

 pany with it. 



C. leucostoma (Pers.) Sacc. 



On cultivated Prnnus doincstica and Amygdaliis Pcrsica, 

 Dec. 12, 1894 (Nuttall, 1769). 



C. EXASPERANS E. & E., Proc. Phila. Acad., 1894, 360. 



Type habitat: On dead limbs Acer Pennsylvamcum, 

 Feb. 2, 1894, Short Creek, alt. 1,300 ft. (Nuttall, discov. 

 1366). 



Stroma buried in the bark, orbicular, about i mm. diame- 

 ter, 4 to 6-celled (at length one-celled), prolonged above 



