92 



Mycologia 



ground at Rio Piedras, Porto Rico, February 22, 1914, /. R. 

 Johnston & J. A. Stevenson 1427. 



60. Poria violacea (Fries) Cooke, Grevillea 14: 112. 1886 



Polyporus violaceus Fries, Obs. Myc. 2 : 263. 1818. 



According to Bresadola, this very rare species is scarcely 

 known by mycologists, even Fries himself confusing it with other 

 species. The color, he says, is constant, dilute-violet ; subiculum 

 exceedingly thin ; tubes 2 to a mm., very short, resembling those 

 of Merulius ; spores hyaline, 5 x 2.5-3 1 1 - Specimens collected by 

 him at Trent on Abies resemble very closely what I am calling 

 Poria purpurea, but Bresadola says that the spores of the latter 

 species measure 7-8x2-2.5/*, and are cylindric-curved. Speci- 

 mens labeled Poria violacea by Ellis and others have a distinct 

 subiculum and differ in other ways. See Poria taxicola. 



61. Poria purpurea (Hall.) Cooke, Grevillea 14: 112. 1886 



Polyporus purpureus Fries, Syst. Myc. 1: 379. 1821. 

 Boletus lilacinus Schw. Schr. Nat. Ges. Leipzig 1 : 74. 1822. 

 fPolyporus oxydatus Berk. & Curt. Jour. Linn. Soc 10: 317. 

 1868. 



This is No. 2274 in Haller's list of Switzerland plants, col- 

 lected on beech logs. Specimens described by Schweinitz were 

 collected in North Carolina. The distribution in America is indi- 

 cated by the list of specimens below, many of which have been 

 called Poria micans Ehrenb., a species not found in America, but, 

 according to Bresadola, well represented by P. albocarneo-gilvidus 

 Romell, collected on oak in Sweden and distributed by Romell. 

 The American hosts of P. purpurea are red maple, magnolia, 

 sycamore, live oak, and pine. 



Canada, Dearness 1075, Macoun 141; New York, Cook; 

 Pennsylvania, Witte 38 ; West Virginia, Nuttall 223 ; Ohio, Lloyd 

 281 1, Morgan 90; Indiana, Underwood ; Colorado, Cocker ell 76; 

 Kansas, Bartholomew 2060, Kcllerman & Swingle 1381 ; Oregon, 

 Murnll 926; California, McClatchie 107 1, Parish 2975, Parks 

 1022. 



