1914] 
BURT—THELEPHORACEJE OF NORTH AMERICA. ІП 367 
ісап specimens distributed іп Ravenel's (Fungi Americani, 
458, were determined by Cooke. In their present dried condi- 
tion these specimens agree well with Holmskiold's illustrations 
in form; the stem of these specimens is now hair-brown and the 
pileus pale olive-buff; their dimensions are: fructifications 1-3 
mm. long, pileus 1-2 mm. long and broad; stem $-1 mm. long 
х 100 » thick. Тһе basidia are 16-20 x 31-41 и; spores color- 
less, even, flattened on one side, 41-6 x 3-31 и. 
Specimens examined: 
Exsiecati: Ravenel, Fung. Am., 458. 
South Carolina: Aiken, Ravenel, Ravenel, Fung. Am., 458. 
IO. C. minutissima Burt, n. sp. Plate 19. fig. 5. 
Type: in Mo. Bot. Gard. Herb. and in Farlow Herb. 
Fructifications gregarious, very minute, membranaceous and 
very delicate, sessile, globose, snow-white, externally villose, 
often with mouth oblique, margin inrolled; hairs white, in- 
crusted, 75-90 x 4 и; hymenium concave, white; База cla- 
vate, 16 x 4 u; spores colorless, even, 5-6 х 4-44. 
Fructifications 200-500 џи broad, about 200-500 м high. 
On inner bark of Populus. New Hampshire. August. 
The characters of this species agree in some details with those 
in the incomplete description of C. globosa Pat., the specimens 
of which were collected on the under side of leaves of ferns in 
Ecuador by von Lagerheim, but as no mention is made of spore 
characters for C. globosa and as other species of Cyphella have 
not been found to vary widely with regard to kind of substra- 
tum, it seems best to regard our New England species as proba- 
bly distinet. С. punctiformis (Fries) Karst. is а small white 
Cyphella, described by Karsten as having spores 5-8 x 2-4 y; 
I have not been able to study authentic specimens of C. punc- 
tiformis, but comparison of C. minutissima with this species of 
northern Europe should be made. 
I refer to C. minutissima a collection made by myself in Ver- 
mont on bark of rotting locust limbs. Тһе fructifications of this 
collection lack spores but agree in all other respects with the 
type. 
Specimens examined: 
New Hampshire: Chocorua, W. G. Farlow, 8, type (in Mo. 
Bot. Gard. Herb., 43803, and in Farlow Herb.). 
Vermont: Middlebury, E. A. Burt. 
