42 MURRILL : POLYPORACEAE OF NORTH AMERICA 



Bull.) \Polyporus 7.'aj'ius(Fers.) Fr.], and some European mycolo- 

 gists go so far as to say that P. clegans and P. Calceolus are the 

 same thing ; but field studies in Sweden have convinced me that 

 we have nothing in America to correspond to B. Calceolus of 

 Bulliard, whose description and figure of this species may be easily 

 matched with European specimens from either field or laboratory, 

 while even our most closely allied Canadian forms of P. elcgans 

 fail to connect with the European relative. 



The variety first described as B. nummulariiis by Bulliard is 

 quite distinct from the typical form when seen in the herbarium, 

 but when both are picked from the same branch in the woods the 

 differences speedily become of minor importance. In the follow- 

 ing partial list of specimens examined, no distinction is made be- 

 tween the two : Tyrol, Bresadola ; Finland, Karsteii ; Canada, 

 Macoiin, Dearncss ; Vermont, Burt ; Maine, Richer, Miss White ; 

 Connecticut, Earle ; New York, Underwood, Cooke, Lobeiistine ; 

 New Jersey, Ellis ; Ohio, Morgan ; West Virginia, Nnttall ; Michi- 

 gan, Ward ; Iowa, Hokvay ; Colorado, Bethel, Crandall ; Wash- 

 ington, Piper, Parker. 



23. PoLYPORUS Fissus Berk. Lond. Jour. Bot. 6: 318. 1847 

 Poly poms trachypus B. & Mont. Syll. Crypt. 154. 1856. 



Both of the above names were assigned to plants sent from 

 Ohio. Those sent by Lea were small and undeveloped and one 

 or two were accidentally lobed. The tubes were so small as to 

 be overlooked and he labelled them Thelephora. The collection 

 made by SuUivant at Columbus was evidently described by Mon- 

 tagne. The description is accurate and quite complete. The 

 reason why neither of these names has come into common use is 

 due to the fact that our plant was at first miscalled P. picipes, a 

 name given by Fries without good reason to plants of P. calceolus 

 having particularly black stems. This latter species, so far as we 

 are aware, does not occur in America, but American specimens at 

 Kew are labeled P. picipes Fr. In the herbarium of Fries at 

 Upsala there is only one specimen of " jP. picipes" from North 

 America and that is determined by Ellis. For our common 

 species, then, which has been so generally known as P. picipes, 

 we must make use of Berkeley's name. 



