1914] 



BURT — THELEPHORACEiE OF NORTH AMERICA. Ill 363 



On Polytrichum and other mosses. New England and New 

 York. August and September. 



The fructifications are very variable in form and they are 

 attached in various ways to the moss plants ; they may be some- 

 what incrusting but at some distance above the ground. The 

 substance of the pileus is very soft and its upper surface is some- 

 what bibulous and shows its interwoven fibers under a lens. 

 The spores of this species are given in Saccardo's 'Sylloge' as 

 8-10 X 5 ju, but the European specimens of exsiccati cited below 

 have small spores of the dimensions which I give for American 

 specimens, and Bresadola, Ann. Myc. i: 111. 1903, gives the 

 spore dimensions as 3-4 x 3 /x- The specimens of C. Pogonati 

 were described as sterile by Peck; I find them to be rather im- 

 mature but bearing spores 3 x 2 ju. 



Specimens examined: 

 Exsiccati: Karsten, Fung. Fenn., 441; Krieger, Fung. Sax., 1564. 

 Finland: Karsten (in Herb. Fries), and Fung. Fenn., 441. 

 Germany: Saxony, W. Krieger, Krieger, Fung. Sax., 1564. 

 Vermont: near Falls of Lana, Salisbury, E. A. Burt. 

 Connecticut: South Windsor, C. C. Hanmer, 1956, the type 



collection of Craterellus Pogonati Pk. 

 New York: Floodwood, E. A. Burt. 



5. C. arachnoidea Peck, Rep. N. Y. State Mus. 44: 134 

 (22). 1891. 



Type : in Collection New York State. 



Fructifications membranaceous, very thin, tender, white, 

 externally downy, irregularly cup-shaped; hymenium some- 

 what uneven in large specimens; spores colorless, even, some- 

 what flattened on one side, 4-5 x 3^-4 n, borne at least two to a 

 basidium. 



Fructifications 2-4 mm. in diameter. 



On bark and mosses. Vermont and New York. September. 



The cups are seated upon or developing from fine, white, 

 loosely branching, webby strings of mycelium. This is a marked 

 character in the type and is the chief character for separating 

 this species from C. muscigena. The spores are slightly more 

 globose than in the latter and it may be that the hymenium of 

 C arachnoidea is superior; in C. muscigena it is inferior. The 

 hyphse are about 2 ^ in diameter in each species. 



