1920] 



BURT THELEPHORACEAE OF NORTH AMERICA. XII 157 



which the fructifications are still with a resupinate portion but 

 with the umbos distinctly outlined, and exactly agree in all 

 respects, even including spore dimensions, with my Vermont 

 collections of the same stage. The authentic specimen of 

 Thelephora ostrea from Java is in the final stage with attachment 

 by umbo only and is clothed over its whole upper surface with a 

 thick coat of tomentum, and matches well most of the specimens 

 of the type collection of Stereum fasciatum in Herb. Schweinitz. 

 I infer from the lack of specimens of S. fasciatum from the East 

 Indies and the Philippines in published exsiccati, that this 

 species is very rare there and that what frequently has been 

 listed as S. ostrea is really the very common S. concolor instead. 

 Schweinitz's original description of S. fasciatum presents at 

 such length the disappearance of tomentum from the upper 

 surface of the pileus and the broad, glabrous, shining surface 

 with many vari-colored zones, that it seems probable he may 

 have intended the description to comprehend not only S. fascia- 

 tum as treated by me but also S. lobatum, which he must have 

 seen about him in North Carolina; nevertheless, the, ample 

 collection of specimens in Herb. Schweinitz which were preserved 

 as the type of S. fasciatum contains no fructifications referable 

 to S. lobatum. 



Specimens examined: 

 Exsiccati: Bartholomew, Fungi Col., 2590, under the name S. 

 versicolor, 2884, under the name S. versicolor, 2985, 3985, 

 4291, and 4986; Ellis, N. Am. Fungi, 18, under the name 

 S. versicolor v. fasciata, 514a, and c, both under the name 

 S. versicolor; Ell. & Ev., N. Am. Fungi, 1714, under the 

 name S. purpureum; Ellis & Ev., Fungi Col., 306, under the 

 name S. versicolor; Ravenel, Fungi Am., 220, under the 

 name S. versicolor, and 721; Smith, Central Am. Fungi, 

 145, under the name S. versicolor; de Thumen, Myc. Univ., 

 2011, mixed with S. lobatum. 

 Norway: Bosekon, Finmark, M. N. Blytt, type of Stereu^m 



arcticum (in Herb. Fries). 

 Sweden: on Alnus, North Sweden, comm. by L. Romell, 400. 

 Canada: J. Macoun, 12. 



Prince Edward Island: /. Macoun, 346 (in Macoun Herb.). 

 Quebec : J. Macoun, 77, 239, 249, 464 (all in Macoun Herb.) 



