CONTEXT AND PORES WHITE OR PALE. 



This species grows on pine and is rather rare both in Europe and 

 the United States. The European plant, as named by Bresadola, ap- 

 pears to me to accord with Fries' description and the figure that he 

 cites. The American plant was called, by Peck, Polyporus maculatus, 

 then changed to Polyporus guttulatus. On comparison, it is the same 

 as European material. The spores are relatively thicker than most 

 allied species. 



ILLUSTRATIONS. Sturm's Flora, fasc. 10, t. 30 (as epixanthus). It is only fairly good. 

 SPECIMENS. Three from Michigan. One from New York, one from Europe. 

 Compare guttulatus, maculatus, testaceus, tiliophila. 





Fig. 639. 



Polyporus Tokyoensis 



Fig. 640. 



Polyporus cretaceus 



POLYPORUS TOKYOENSIS (Fig. 639). Pileus applanate or 

 ungulate, 1-2 cm. thick, sessile. Surface dull, friable, white. Con- 

 text white, very friable, fragile. Pores small, pale greyish, probably 

 discolored in drying. Spores 1x5, allantoid, hyaline, smooth. 



Based on a collection from S. Kawamura, Japan (No. 29). It is 

 same as Polyporus immaculatus, excepting the different pore color, 

 which is white in immaculatus. It is similar to Polyporus caesius as 

 to color of dried specimen, but has small pores. 



POLYPORUS CRETACEUS (Fig. 640). Pileus ungulate (3 x 

 3x5 cm.), sessile, dimidiate. Surface dull, fragile, no distinct crust, 

 pale greyish alutaceous. Flesh thick, pure white, very soft and fragile 

 like chalk. Pores isabelline, small, round, irregular, 4-5 mm. long, 

 contrasting with the pure white flesh. Spores large, 6 x 10 mic., piri- 

 form, guttulate, hyaline, smooth. 



This is based on a specimen, donor unknown, from Tasmania. 

 It evidently grew on charred wood. The soft, friable, pure white flesh 



302 



