96 



Mycologia 



of the material is in very good shape to compare with Porta mu- 

 tatis or other near relatives. The description is as follows: 



" Resupinate, effused, mostly in small patches 2-4 cm. across, 

 inseparable, soft, juicy, creamy-white when fresh, becoming red- 

 dish when dry ; margin thin, membranaceous, narrow, almost 

 wanting. Pores round to sub-angular, Ya-Yz cm. long, /4 _ ^2 

 mm. wide, dissepiments thin, margin acute but not lacerate. 

 Spores elliptic-oblong, 4x3 /a." 



68. Poria spissa (Schw.) Cooke, Grevillea 14: no. 1886 



Polyporus spissus Schw. in Fries, Elench. Fung. 1: in. 1828. 

 Polyporus salmonicolor Berk. & Curt. Hook. Jour. Bot. 1 : 104. 



1849. Grevillea 1 : 53. 1872. 

 Polyporus crueniatus Mont. Ann. Sci. Nat. 1 : 129. 1854. 

 ?Polyporus laetificns Peck, Ann. Rep. N. Y. State Mus. 38: 91. 



1885. 



Poria crocipora Cooke, Grevillea 14: no. 1886. 



Poria phlebiaeformis Berk. ; Cooke, Grevillea 15 : 24. 1886. 



Originally described from Schweinitz' collections in North 

 Carolina on hard trunks. Redescribed from Ravenel's collec- 

 tions in South Carolina on burnt wood, the authors supposing 

 that Schweinitz sent a different plant to Fries under the name 

 P. spissus. The original Schweinitzian description, however, calls 

 for a plant with spadiceous tubes and Fries refers in his notes to 

 distinct black lines and to its resemblance to the true P. obliquus, 

 whose tubes are similarly oblique and somewhat spadiceous. 

 Moreover, specimens in Hooker's herbarium were marked P. 

 spissus by Schweinitz and excellent types of the same kind still 

 exist in the Schweinitz herbarium. 



P. phlebiaeformis is hardly mature enough to show its true 

 characters. P. laetificns is also probably a young stage, the type 

 material being sterile and too poor for comparison. When young, 

 P. spissa is white, then pale-salmon-tinted with a whitish border. 

 Ellis describes it as continuous for 2-3 feet, with a thin, narrow, 

 subtomentose margin, showing at first only a faint tinge of sal- 

 mon color, which becomes deeper and changes more or less to a 

 dull-red in drying, turning reddish when bruised, and having a 



