LIGHT-COLORED RESUPINATE 

 POLYPORES— IV 



William A. Murrill 



The last article, devoted to red or reddish species, appeared in 

 the March number of Mycologia. In the present article, I pro- 

 pose to discuss some of the resupinate forms in which yellow is 

 the predominant color. 



74. Poria aurea Peck, Ann. Rep. N. Y. State Mus. 43 : 67. 1890 



Described as follows from specimens collected by Peck at 

 Sevey, New York, in July on decaying wood of sugar maple : 



" Effused, forming patches several inches in extent, 2 to 3 

 lines thick, separable from the matrix, golden yellow ; subiculum 

 thin, sub-gelatinous, the young margin byssoid or fimbriate, 

 greenish-yellow, soon disappearing; pores small, subrotund, elon- 

 gated, the dissepiments thin, rather soft." 



This species, which seems to occur on both deciduous and co- 

 niferous wood, has been confused with Poria subacida, even by 

 Peck himself. According to Overholts, the spores are oblong or 

 short-cylindric, smooth, hyaline, 5-5-7-5 X 2.5-3.5 ^ ; cystidia 

 large, hyaline, abundant, projecting. I find the types to be near 

 P. subacida, but a richer golden-yellow and apparently more 

 fragile. 



75. Poria sulphurella (Peck) Sacc. Syll. Fung. 9: 190. 1891 



Polyporus sulphurellus Peck, Ann. Rep. N. Y. State Mus. 42 : 

 123. 1889. 



Described as follows from specimens collected by Peck in Sep- 

 tember on dead poplar bark in the Catskill Mountains : 



" Resupinate, effused, very thin, following the inequalities of 

 the matrix; subiculum and margin downy, white; pores very 

 short, minute, rotund, very pale-yellow, often with a slight sal- 

 mon tint, the dissepiments obtuse." 



171 



