1924 
BURT—THE THELEPHORACEAE OF NORTH AMERICA. XIII 11 
Fructifications coriaceous, soft, drying horn-like, rigid, pezizoid 
when young, becoming expanded, more or less confluent, affixed 
by the center, the margin free all around and upturned, minutely 
white-villose; hymenium blood-red, even at first, drying somewhat 
ed; in structure 400-800 џ thick, composed of parallel, 
longitudinally arranged and ascending hyphae with narrow 
lumen and walls gelatinously modified; basidia simple, with 2 or 
4 sterigmata; spores hyaline, even, cylindric, curved, 12-15 x 
314-5 u in American specimens, 16-18 x 6-8 y in European 
specimens as recorded by Karsten also. 
Fructifieations 1-2 mm. in diameter at first, at length up to 
6-12 mm. long by confluence. 
On dead limbs of Saliz. Northern Europe and Canada and 
northern United States. May to December. Common. 
Rea gives Corticium salicinum as а synonym of Cytidia rutilans 
(Pers.) Quel, with spores globose, 8 y in diameter. I do not 
find a species rutilans in the index of Persoon’s ‘Synopsis Fungo- 
rum' for any thelephoraceous genus and have not access to 
Quelet’s ‘Fl. Мус. France.’ Тһе globose spores point to a differ- 
ent species from Corticium salicinum Fries, with an authentic 
specimen of which, in Kew Herbarium, I compared one of my 
gatherings. 'The description of T'helephora cruenta Persoon, Syn. 
Fung., is too vague to take priority for the specifie name over 
salicinum of Fries. 
Specimens examined: 
Exsiccati: Bartholomew, Fungi Col., 4218; Ellis, N. Am. Fungi, 
609; Ell. & Ev., Fungi Col., 1212; Shear, N. Y. Fungi, 54; de 
Thümen, Myc. Univ., 114. 
Sweden: E. Fries (in Kew Herb.). 
Finland: Mustiala, P. A. Karsten, in de Thins, Myc. Univ., 
114. 
Austria: Gastein Salisb., Niessl (in Mo. Bot. Gard. Herb., 
43459); Innsbruck, V. Litschauer. 
Canada: J. Macoun. 
Ontario: Byron, J. Dearness, in Bartholomew, Fungi Col., 4218; 
Ottawa, J. M. Macoun, 15, comm. by N. Y. State Mus. Herb. 
(in Mo. Bot. Gard. Herb., 56082); Toronto, J. Н. Faull, Univ. 
Toronto Herb., 315 (in Mo. Bot. Gard. Herb., 44882). 
