Studies in North American Discomycetes. Il. Some new or note- 
worthy Species from central and western New York 
By Eras J. DuRAND 
My studies in the Discomycetes extending over several years 
have brought to light many interesting forms which it is my plan to 
discuss in this and future papers. Many of these undoubtedly rep- 
resent undescribed species, while others present such interesting 
features of already known species that notes upon them will, it is 
hoped, lead toward a better understanding of our discomycete flora. 
I wish especially to acknowledge my indebtedness to Dr. H. Rehm, 
whose work upon the Discomycetes of central Europe will long 
- remain a model for workers elsewhere ; and of whose kindly as- 
sistance and critical opinions, always so freely extended, I have 
constantly availed myself. 
AscopoLus ATRO-Fuscus Phil. & Plow. Grevillea, 2: 186. pl. 24-/- 
f, Ab7A 
A. viridis Boud. Ann. Sci. Nat. V. 10: 217. pl. 5.f: 4: 1869. 
(Not Currey.) 
A. carbonicola Boud. Bull. Soc. Bot. Fr. 24: 310. 1877: 
Phacopesia Nuttallii E. & E. N. A. F. no. 2908. (Nomen 
ined.) 
Exsicc.: Phil. Elv, Brit. no. 47; E. & E. N. A. F. no. 2908: 
Ascomata scattered, sessile, at first spherical and closed, a 
expanding, becoming orbicular, flattened and scutellate, sometime* 
contorted, often attached to the substratum} by white myceli 
threads, I-10 mm. in diameter; when fresh yellow or greenish- 
yellow, but in drying and at maturity the disk becomes yellowish- 
brown, finally dark chestnut or almost black, and papillate — 
the projecting asci. The exterior usually remains yellowish-br own 
and furfuraceous, with the margin slightly inrolled. Excipulut 
parenchymatous throughout, composed of irregularly rounded pee 
of variable size, 15-50 » in diameter, the ectal ones projecting from 
the surface in groups. Hypothecium rather sharply differentiate? 
cells small, not more than 10 p in diameter. » Hymenium about 3 
the total thickness of the cup at the base. Asci clavate-cylindr 
cal, apex rounded and blue with iodine, 150 x 12-1571 eT 
458 
