lOlG] 



BURT THELEPHORACEAE OF NORTH AMERICA VI 211 



Under side of decaying limbs and logs of both coniferous 

 and frondose species. Canada and New England to Michigan, 

 and in British Columbia; also in Sweden. August to Octo- 

 ber. Occasional. 



This species has the same color externally as H. ferrugi- 

 neus, from which it differs in being more compact, so that 

 it is membranaceous and may be cautiously peeled up from 

 the substratum. Dried specimens often have their central 

 portion cracked and curled away from the substratum, while 

 H. ferruginens is adnate. Furthermore, R. subferrugineus 

 has hyphae next to the substratum dark-colored and ar- 

 ranged longitudinally along the surface of the substratum, 

 which is not the case in H. ferrugineus. 



Specimens examined: 

 Exsiccati : Ellis, N. Am. Fungi, 421, under the name Zygo- 



desmus rubiginosus. 

 Sweden: Femsjo, L. Romell, 233. 

 Canada: definite locality not stated, J. Maooun, 11; St. 



Lawrence Valley, J. Macoun, 20. 

 New Hampshire : Chocorua, W. G. Farloio, 1, 3, a collection 



dated Sept., 1903, and a collection dated 1915 — the last (in 



Mo. Bot. Gard. Herb.). 

 Vermont: Middlebury, E. A. Burt, two collections. 

 New York: Sylvan Beach, Oneida Co., H. D. House (in N. 



Y. State Mus. Herb, and in Mo. Bot. Gard. Herb., 5893). 

 New Jersey: Newfield, J. B. Ellis, in Ellis, N. Am. Fungi, 



421. 

 Michigan: Ann Arbor, A. H. W. Povah, 4 (in Mo. Bot. 



Gard. Herb., 11774). 

 British Columbia: Sidney, J. Macoun, 26, in part (in Mo. 



Bot. Gard. Herb., 8933). 



4. H. canadensis Burt, n. sp. 



Type: in Burt Herb. 



Fructifications small, effused, membranaceous, easily sep- 

 arable from the substratum, dry, tomentose, drying between 

 Brussels-brown and hazel, the margin very thin, fibrous; 



