Polyporacese 



Mcllvaine remarks that when it is cooked it is delicate and savory. Boletus. 

 Peck, Bull. Torrey Bot. Club, No. 27. 



In commenting upon this new species to the writer, Professor Peck 

 says: "I suspect that the spores of this (B. eccentricus) are pinkish 

 or rosy. If so, it belongs here (in Hyporhodii). If not, it may have 

 to go in the Luridi, or possibly may be made the type of a new tribe. 



CARIO'SI caries, rottenness. 



Stem never reticulated, stuffed with a spongy pith, at length com- 

 monly excavated. Tubes at first white, then often yellowish, their 

 mouths minute, round. 



Fries adds to these characters, "spores white." But in our species 

 the spores are pale-yellow when shed in a mass on white paper. They 

 are more elliptical in outline than the spores of most Boleti. The 

 character of the stem is peculiar and easily distinguishes the tribe. The 

 exterior is firm, the interior soft and spongy, becoming irregularly 

 hollow or cavernous in the typical species. 



Flesh unchangeable I 



Flesh quickly changing to blue where wounded B. cyanescens 



i . Pileus minutely velvety-tomentose B. castaneus 



I . Pileus granulated B. Murray! 



Peck, Boleti of the U. S. 



B. cyanes'cens Bull. cyaneus, deep-blue. Pileus convex or nearly 

 plane, opaque, floccose-scaly or covered with an appressed tomentum, 

 pale-buff, grayish-yellow, yellowish or somewhat brown. Flesh rigid, 

 white, quickly changing to blue where wounded. Tubes free, white, 

 becoming yellowish, the mouths minute, round, changing color like the 

 flesh. Stem ventricose, hoary with fine hairs, stuffed, becoming cav- 

 ernous, contracted and even at the top, colored like the pileus. Spores 

 subelliptical, 10-12.5x6-7.5^. 



Pileus 2-5 in. broad. Stem 2-4 in. long, 8-18 lines thick. 



Woods and open places. New York, Peck; New England, Frost, 

 Bennett; Minnesota, Johnson; Wisconsin, Bundy. Peck, Boleti of the 

 U. S. 



High ground in woods. Solitary. West Virginia mountains, Spring- 

 ton Hills, Pa., Kingsessing, Philadelphia, Mt. Gretna, Pa., Mcllvaine. 



471 



