AMERICAN BOLETES 9 



luteous; margin acute, paler; context whitish, tinged with red or 

 yellow, becoming reddish when bruised, slightly acid, not bitter; 

 tubes nearly free, depressed at times, flavous, becoming darker 

 at maturity, changing to greenish-yellow when wounded, mouths 

 large, subcircular, somewhat unequal; spores melleous to olive- 

 brown, papillate, oblong-ellipsoid, 16-20 X 7~9M; stipe tapering 

 upward at the base, very long, pitted with long narrow depres- 

 sions, giving it a shaggy appearance, flavous above and along 

 the ridges, dull-purplish below, especially in the depressions, flesh 

 solid, white or yellow with purplish tints, 10-20 cm. long, 0.5-1.5 

 cm. thick. 



Frequent in deciduous woods from North Carolina to Alabama 

 and west to Tennessee, Ohio, and Kentucky. 



3. CERIOMYCES ALBELLUS (Peck) Murrill 



Pileus circular, convex, subcespitose, 2-4 cm. broad; surface 

 white or grayish-white with more or less bloom, sometimes pale- 

 avellaneous-isabelline, occasionally violet-gray when young, 

 glabrous or subglabrous, dry; margin thin, regular, fertile, 

 concolorous; context white or whitish, tinged with yellow at 

 times, unchangeable; tubes plane, adnate, slightly depressed at 

 times, rather short, white, violet-gray at times when young, 

 becoming pale-yellow and sometimes darker-yellow from the 

 maturing of the spores, mouths small, nearly circular, regular, 

 edges rather thick, entire; spores oblong-ellipsoid, brownish- 

 ochraceous, 14-16 X 5-6 /*; stipe central, cylindric, equal, some- 

 times thickened at the base, white or whitish, glabrous or nearly 

 so, usually distinctly reticulate in the upper half, but rarely 

 smooth or somewhat striate except at the very top, 3-5 cm. long, 

 5-10 mm. thick. 



Occasional in deciduous woods from New York to Virginia and 

 Tennessee. 



4. CERIOMYCES FRUSTULOSUS (Peck) Murrill 



Pileus thick, convex or nearly plane, 2.5-5 cm - broad; surface 

 white or whitish, subglabrous, rimosely areolate, the areolae 

 unequal and appearing like frustra of polygonal pyramids; 

 context whitish, unchanging; tubes depressed, whitish, becoming 

 pale-brown, equaling the thickness of the context; spores fusi- 

 form, smooth, yellowish-brown, 15-18X4-6^1; stipe equal, 

 whitish, reticulate above and sometimes nearly or quite to the 

 base, solid, 2.5-5 c 111 - l n g> l ~ 2 cm - thick. 



Occasional on clay banks and open ground in Mississippi and 

 Alabama. 



