the margin of the cap sometimes curves upward, giving a very convex Boletus, 

 surface to the tubes. Sometimes the wounded flesh slowly assumes a 

 yellowish hue. The peculiar rusty-ochraceous hue of the spores is also 

 seen sometimes in the tubes of old specimens. As in many species, the 

 flesh of old plants is more soft than that of young ones. The stem is 

 quite variable and is often narrowed downward. It is sometimes very 

 obscurely reticulated at the top. 



The cap is generally 2-4 in. broad, the stem 1.5-3 m - l n g 4-8 lines 

 thick. The plants are found in thin woods or in bushy places in July 

 and August. 



Var. maculo ' sus Pk. differs from the type simply in having a few 

 yellowish spots scattered over the cap. 



While not as high flavored as some Boleti this is, nevertheless, a 

 fairly good and perfectly safe one. Peck, 49th Rep. N. Y. State Bot. 



Very open timber in Woodlands Cemetery, Philadelphia. August, 

 1898. Mcllvaine. 



A solitary species which does not appear to be plentiful. The whole 

 fungus is edible, but the stems and tubes are of different texture from 

 the caps and do not cook well with them. 



B. sestiva'lis Fr. pertaining to summer. PileuS convex or nearly 

 plane, even, glabrous, whitish, granulose in dry weather. Flesh yel- 

 low below, white above. Tubes nearly free, the mouths minute, equal, 

 yellow. Stem very thick, bulbous, even, glabrous, pale yellow, red- 

 dish within at the base. Spores elongated-oval, greenish-brown, rather 

 dark, 1 1x4 5/x,. 



Pilens 4-6 in. broad. Stem 4-5 in. long. 



Woods and woodland pastures. Minnesota, Johnson; California, H. 

 and M. 



A large species, recorded as edible and said to be pleasant and deli- 

 cate in flavor. I have seen no specimens of this. Peck, Boleti of the 

 United States. 



West Virginia mountains, 1882, Haddonfield, N. J., 1894, Mcllvaine, 

 on grassy margin of woods. 



The flesh is sweet, nutty. Remove stems and tubes when old. 



s 



B. impoli'tllS Fr. unpolished. PileuS convex, dilated, flocculose, 

 at length grained in lines, unpolished, tawny-brown. Flesh white or 

 29 449 



