386 PROCEEDINGS OF THE ACADEMY OF [1894. 



septa, about 4;/ thick and 200-300;/ long. Conidia near the base of 

 the hyph?c, at first elliptical, yellowish-hyaline, iiniseptate 8-10x6- 

 1 II-, soon becoming 4-6-septate, nuirif'orni and opake, 10-25//. diam., 

 subglobose, obovate, or elliptical. 



Pilacre gracilipes E. & E. 



On rotten wood, Nuttallburg, West Va., Dec. 1893 (L. W. 

 Nuttall, No. 274). 



Scattered, stem slender, white-pruinose, 3 mm. long, \-i mm. 

 thick. Head subhemispherical, olivaceous, about 1 mm. diam. 

 Fertile hyphae hyaline, dichotomously branched, 2-lhiJ. thick, bear- 

 ing the conidia laterally. Conidia globose or subglobose, yellow- 

 brown under the microscope, 4-5j//. diam. 



Smaller and of a more slender growth than P. Petersli B. & C. 



Tubercularia hamata E. & E. 



On dead limbs of Celtis occidentalis, Nuttallburg, West Va., Feb. 

 1894 (L. W. Nuttall, No. 313). 



Depressed-hemispherical, umbonate, soon becoming black, 2-14 

 mm. diam. Conidia oblong, slightly curved, hyaline, 5-8 x 12-2;/, 

 on slender, simple sporophores 30-40;/. long, incurved or involute at 

 the tips. 



Hymenula cerealis E. & E. 



On wheat straw, Nuttallburg, West Va., May, 1894 (L. W. 

 Nuttall, No. 495). 



Sporodochia gelatinous, orbicular, yellowish- amber color, becom- 

 ing darker, at first subpulvinate, becoming depressed or flattened, 

 *-f mm. diam. Basidia slender, 25-30x11;/, simple or oftener 

 branched, the branches erect. Conidia hyaline, oblong, minute, 3- 

 4x1-11;/.. 



Microcera erumpens E. & E. 



On dead limbs of Tsuga Canadensis, Nuttallburg, West Va., Feb. 

 1894 (L. W. Nuttall, No. 371). 



Sporodochia depressed- globose, 2 mm. diam., at first covered by 

 the epidermis, soon exposed and bare, orange-red, at length dis- 

 appearing and leaving cup-shaped cavities in the bark. Conidia 

 falcate, nucleate and finally 3- or more- septate, 75-83 x 3-4;/., 

 hyaline, borne on short (20-35;/) sporophores which are more or 

 less branched above. 



Differs from M. coccophila Desm. in the shape of the sporodochia 

 and their subcuticular origin. 



