CONTEXT WHITE OR PALE. PORES COLORED. 



In pine regions of Europe this is a frequent plant. It is noted 

 for the various shades of color the pores assume. The gelatinous 

 nature of the plant gives the pores a waxy appearance, by which the 

 species can be recognized even when dry. In the United States it is 

 rare, in the East. Schweinitz's record is an error, but Berkeley- 

 Ravenel's record is correct. We have fine typical specimens from 

 Idaho, Weir. 



In olden times Link named the plant Boletus epigeus, according 

 to his specimen, but it does not seem to have gotten into print. Fries 

 called it Polyporus amorphus. Persoon states (truly) that it is no 

 more amorphous than any other species, and would have changed the 

 name to Polyporus aureolus, which, of course, Fries would not accept. 

 He changed Persoon's names whenever it suited his fancy, but he 

 would not stand for his own names being changed. We believe Poly- 

 porus amorphus never occurs except in connection with pine, and it 

 often grows over pine needles. 



ILLUSTRATION'S. Gillet, very good, form with yellow pores. Sturm, fasc. 27, t. 12, best 

 form with rosy pores (called Polyporus roseo-poris). Sowerby, 423, no doubt correct, but poor. 



SPECIMENS. Europe, a number; United States (where it is extremely rare): Idaho, James R 

 Weir, three good collections; Michigan, C. H. Kauffman; Eastern States, F. H. Ames, Miss A. Hib- 

 bard. These four collectors (and Ravenel) are all that have ever been found in the United States. (It 

 is not included in N. A. F.) Japan, A. Yasuda. 



Compare alboaurantius, alboroseus, Armeniacus, cerebrinus, epigeus, erythroporus, investiens, 

 Kymathodes, molluscus, roseo-maculatus, Virginii-Cuboni. 



THIRD GENERAL DIVISION. 



CONTEXT AND PORES COLORED. SPORES HYALINE. 



This we divide into six sections. None have setae excepting the last. 

 Context isabelline or yellow Section 91. 



Context orange red, soft, spongy . 



Context vinaceous or purple 



Context olive 



Context brown. Setae none 



Context brown. Setae present 



SECTION 91. CONTEXT ISABELLINE OR YELLOW 



92. 

 93. 

 94. 

 95. 

 96. 



POLYPORUS CROCEUS. Pileus bright yellow when in its 

 prime, sessile, dimidiate, sometimes large (5-15 x 10-25 x 1-3 cm.) 

 Surface dull, concolorous, minutely velvety when young. Flesh con- 

 colorous, drying hard, and discolored. Pores concolorous, medium, 

 small, irregular, drying hard, resinous, darker color than the context. 

 Spores oval, 3 x 4-4 >, smooth. 



W T hen in its prime, this is the most showy Polyporus that grows; 

 nevertheless there has never been a colored plate made of it. It is 

 rather rare in Europe, always on oak, and has a preference for growing 

 in hollow oaks. In America it is larger and more common, often on 



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