1920] 



BURT THELEPHORACEAE OF NORTH AMERICA. XII 205 



Wholly resupinate specimens have merely a superficial resem- 

 blance to Peniophora, for they are loosely attached to the 

 substratum by the layer of loosely arranged, coarse hairs which 

 forms the strigose covering of the upper surface of a renexed 

 specimen; the intermediate layer is well developed in resupinate 

 specimens, and the cystidia and spores are the same as in reflexed 

 specimens. It is surprising that a species so common and so 

 marked in its microscopical characters should have seemed new 

 so many times. 



Specimens examined: 

 Exsiccati: Bartholomew, Fungi Col., 2337, 4648; Ell. & Ev., 

 N. Am. Fungi, 2314, type distribution of Peniophora occi- 

 dentalis; Shear, N. Y. Fungi, 313. 

 Canada: J. Macoun, J+5, 68, and another specimen comm. by 

 J. B. Ellis, under the name Peniophora occidentalis ; Lower 

 St. Lawrence valley, /. Macoun, 33, 34, 79. 

 Quebec : Hull, J. Macoun, Nat. Hist. Surv. of Canada, 359, and 



J. Macoun, 52; Ironsides, J. Macoun, 282. 

 Ontario: Guelph, J. H. Fault, Univ. Toronto Herb., 669 (in 

 Mo. Bot. Gard. Herb., 44916); Jefferson, G. H. Graham, 

 Univ. Toronto Herb., 673 (in Mo. Bot. Gard. Herb., 44922); 

 Ottawa, J. Macoun, 234; Toronto, J. H. Fault, Univ. 

 Toronto Herb., 651 (in Mo. Bot. Gard. Herb., 44947). 

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

 Massachusetts: W. G. Fartow, two collections. 

 New York: Alcove, C. L. Shear, 1312, and in Shear, N. Y. Fungi, 

 313; Cayuga Lake Basin, G. F. Atkinson, 3020, 8023, J; 

 Greenbush, C. H. Peck (in N. Y. State Mus. Herb, and 

 Mo. Bot. Gard. Herb., 56020); Ithaca, C. J. Humphrey, 

 261 , and a specimen comm. by G. F. Atkinson, Van Hook, 

 comm. by G. F. Atkinson, 7988; Knowersville, C. H. Peck 

 (in N. Y. State Mus. Herb, and Mo. Bot. Gard. Herb., 

 55755) ; Syracuse, L. M. Underwood, 5 (in N. Y. Bot. Gard. 

 Herb, and Mo. Bot. Gard. Herb., 56709); Verona, C. H. 

 Peck, type of Stereum neglectum (in N. Y. State Mus. Herb., 

 and perhaps a duplicate in Mo. Bot. Gard. Herb., 55754). 

 Pennsylvania: Bethlehem, Schweinitz, type (in Herb. Schweinitz, 



Curtis Herb., and Kew Herb.). 

 South Carolina: Curtis Herb., 5997, type of Stereum moricota 

 (in Kew Herb.). 



