Polyporaceee 



or slightly depressed around the stem, nearly plane, their mouths small, Boletus, 

 subrotund, white or whitish. Stem equal or slightly tapering upward, 

 distinctly reticulated, whitish or yellowish, sometimes reddish toward 

 the base. Spores ochraceous-brown, 1 0-14x4-5^. 



Pileus 2-4 in. broad. Stem 2-4 in. long, 3-6 lines thick. 



Thin woods and open places. New York, Peck. 



Peck, Boleti of the U. S. 



B. flexuos'ipes Pk. flexuous stem. Pileus convex or plane, even, 

 subtomentose, pale-brown. Flesh white, unchangeable, the cuticle 

 separable. Tubes long, convex, decurrent, white or whitish, becoming 

 brownish with age. Stem flexuous, solid, reticulated, whitish or pallid, 

 changing to brown where bruised. Spores 7.5-10x4^1. 



Pileus 3-4 in. broad. Stem 4-6 in. long, 8-15 lines thick. 



Mixed woods. North Carolina, C. J. Curtis. Peck, Boleti of the 

 U. S. 



B. ferrugi'neus Frost rust color. Pileus convex, soft, subto- 

 mentose, dark reddish-brown. Flesh white, unchangeable. Tubes 

 generally adnate, dingy-white, their mouths stained brown by the spores. 

 Stem short, reticulated, dark-brown. Spores 10-13x6/4. 



Pileus 3-6 in. broad. 



Borders of woods. New England, Frost. Peck, Boleti of the U. S. 



Alabama, 1897. 



B. rubigino'sus Fr. rusty. Pileus convex, soft, pubescent, soon 

 bare, brownish-rust color. Flesh subspongy, white, unchangeable. 

 Tubes adnate, their mouths unequal, white. Stem firm, stout, reticu- 

 lated, at first whitish or pallid, then yellowish, subcinereous or yellow- 

 ish-olivaceous where touched. 



Pileus 2-4 in. broad. Stem 2-3 in. long, I in. thick. 



Woods. North Carolina, Curtis. 



Although apparently distinct, this and the two preceding species are 

 not sufficiently well known. Peck, Boleti of the U. S. 



B. tabaci'nus Und. Pileus fleshy, convex or nearly plane, subgla- 

 brous, often cracked in areas, tawny-brown. Flesh at maturity soft and 

 similarly colored. Tubes concave or nearly plane, depressed around 



443 



