Polyporaceae 



Boletus. B. indeci'sus Pk. undecided. (Plate CXXII, fig. i, p. 468.) Pi- 



leus convex or nearly plane, dry, slightly tomentose, ochraceous-brown, 

 often wavy or irregular on the margin. Flesh white, unchangeable; 

 taste mild. Tubes nearly plane or convex, adnate, grayish becoming 

 tinged with flesh color when mature, changing to brownish where 

 wounded, their mouths small, subrotund. Stem minutely f urf uraceous, 

 straight, or flexuous, reticulated above, pallid without and within. 

 Spores oblong, brownish flesh color, 12.5 I5x4/x. 



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



Thin oak wt>ods. New York, Peck. 



The mild taste and darker colored spores will separate this Boletus 

 from any form of B. felleus. Its stem reticulated above distinguishes it 

 from B. alutarius. It resembles B. modestus in some respects, but its 

 tubes are not at all yellow. Peck, Boleti of the U. S. 



Kentucky, Lloyd, Rep. 4. 



Woodland Cemetery, Philadelphia, July, 1897, Mcllvaine; Trenton, 

 N. J., August, 1897, Sterling. In open mixed woods. 



Boletus indecisus so closely resembles B. felleus in some of its forms 

 that until the color of the spores is ascertained, the sweet taste, without 

 trace of bitter, is the only thing that will enable the finder to discrimi- 

 nate between them. Young B. felleus are at first pleasant to the taste 

 and do not, at once, develop their intense bitter in the mouth. They 

 m*ay readily be taken for B. indecisus. If, by mistake, a single B. fel- 

 leus is cooked with mild species, the dish will be spoiled. Specimens be- 

 lieved to be B. indecisus should be tested. A minute will perfectly sat- 

 isfy anyone. 



The B. indecisus is delicious. 



B. aluta'rius Fr. aluta, tanned leather. Pileus convex, then nearly 

 plane, soft, velvety, becoming glabrous, brownish tan color. Flesh al- 

 most unchangeable, taste mild, watery. Tubes depressed around the 

 stem, plane, short, round, white, becoming brownish where wounded. 

 8tem solid, bulbous, nearly even, small, irregular prominences at the 

 top. Spores 1 4x4/4. 



Pileus 3-4 in - broad. Stem 4-5 in. long. 



Grassy woods. Minnesota, Johnson. Peck, Boleti of the U. S. 



West Virginia mountains, 1882-1885. Margins of woods. Chelten- 



468 



