634 Mukkill : Polyporaceae of North America 



2. Tubes round, equal and rather thick-walled at maturity, becoming lacerate only 

 with age ; plant not fragrant. 2. B. fumosa. 



Tubes angular, unequal and thin-walled at maturity ; plant fragrant. 



3. B. frag rails. 



I. BjERKANDERA ADUSTA (Willd.) Karst. 



Boletus adustus Willd. Fl. Berol. 392. 1787. 



Boletus fuscoporus Plan. PI. Erf. 26. 1788. 



Boletus siiberosus Batsch, Elench. Fung. pi. 226. 1789. 



Boletus pelleporus Bull. Herb. Fr. 11 : pi. joi. f. 2. 1790. 



Boletus carpineus Sowerby, Eng. Fung. pi. 231. 1799. 



Boletus adustus crispus Pers. Obs. Myc. 2 : 8. 1799. 



Polyporus erispus Fr. Obs. Myc. I : 127. 181 5. 



Boletus isabelliuus Schw. Syn. Fung. Car. 70. 18 18. 



Polyporus adustus Fr. Syst. Myc. I : 363. 1821. 



Polyporus subciuereus Berk. Ann. Mag. Nat. Hist. 3: 391. 1839. 



Polyporus Halesiae B. & C. Ann. Mag. Nat. Hist. II. 12 : 434. 



1853. — Grevillea 1 : 52. 1872. 

 Bjcrkaudera adusta Karst. Medd. Soc. Faun, et Fl. Fenn. 5 : 



38. 1879. 

 JMyriadoporus adustus Peck, Bull. Torrey Club II : 27. 1884. 

 Polyporus Burtii Peck, Bull. Torrey Club 24: 146. 1897. 



The history of this fungus has been that of most of our abund- 

 ant, widespread and variable species : it has been named and re- 

 named again and again in various countries by mycologists not in 

 touch with each other and not conversant with the work already 

 done, until, with types gone and data lost, it seems wellnigh im- 

 possible to follow the various specific and varietal names with 

 exactness. The above list, however, while not complete, repre- 

 sents fairly well the best known synonyms since Willdenovv first 

 described it in 1787. 



Four or more new names have been given the plant in this 

 country from the days of Schweinitz to the present time. Berke- 

 ley's name, P. subciuereus, assigned to plants collected at Carlton 

 House by Richardson, was corrected by Montagne and the cor- 

 rection accepted by Berkeley. P. Halesiae, described from plants 

 collected by Ravenel on Halesia tctraptcra in Georgia, is acknowl- 

 edged by the authors to be allied to P. crispus, but claimed to be 

 distinct. P. erispus itself was without sufficient reason raised to 



