1918] 



BURT THELEPHORACEAE OF NORTH AMERICA. X 347 



ents many specimens which will be found cited under H. 

 spreta. H. cinnamomea appears clearly distinct from H. 

 spreta by its velvety surface, not contracting greatly in thick 

 specimens nor cracking to the substratum so as to form small, 

 isolated, rectangular masses, by setigerous layers 30-45 n 

 broad and usually narrower than the adjoining hyphal layers, 

 and spores up to 4|-9 n long. Several of the American speci- 

 mens cited below are first-stratum stages. 



Specimens examined : 

 Exsiccati: Libert, PL Crypt. Arduennae, 122. 

 Norway: Christiania, M. N. Blytt (in Herb. Fries, det. by E. 



Fries). 

 Sweden: L. Romell, 85, first-stratum stage; Lapland, L. 



Romell, 398, 399. 

 Finland: Mustiala, P. A. Karsten, authentic specimen of Hy- 



menochaetella rudis. 

 Hungary: Kmet, det. and comm. by J. Bresadola. 

 Belgium: in Libert, PI. Crypt. Arduennae, 122. 

 New York: Staten Island, W. H. Ballon (in N. Y. Bot. Gard. 



Herb., and in Mo. Bot. Gard. Herb., 55544). 

 Ohio : Cincinnati, C. G. Lloyd, 4507. 

 Hlinois: Riverside, E. T. & S. A. Harper, 657. 

 Nebraska: Woodlawn, C. L. Shear, 1026, first-stratum stage. 

 Kansas: Rooks Co., E. Bartholomew, first-stratum stage. 

 California: Santa Barbara, 0. M. Oleson, 17, first-stratum 



stage. 

 British Columbia: Sidney, J. Macoun, 37, 99, 111 (in Mo. Bot. 



Gard. Herb., 6687, 55364, 55365). Nos. 37 and 111 are in the 



first-stratum stage. 



22. H. digitata Burt, n. sp. 



Type: in N. Y. Bot. Gard. Herb, and Mo. Bot. Gard. Herb. 



Fructification resupinate, long and broadly effused, adnate, 

 drying between Brussels-brown and antique brown, with hy- 

 menium somewhat granular, the margin determinate, very 

 thin ; in structure stratose, 800 ix thick, composed of about 15 

 narrow, loosely interwoven, hyphal layers alternating with the 

 same number of very dense, dark and opaque setigerous layers 



