American Boletes 37 



floccose, tawny-brown or yellowish-brown, yellowish at the 

 apex, hollow within, sometimes stuffed when young, 3.5-7 cm. 

 long, 6-12 mm. thick; veil white, evanescent, partly adhering to 

 the margin of the pileus and partly to the stipe in the form of a 

 delicate annulus. 



Occasional in swampy or mossy places in New England and 

 New York. 



2. BOLETINUS GRISELLUS Peck 



Pileus convex to nearly plane, 3-7 cm. broad; surface dry, 

 slightly fibrillose-squamulose, whitish or grayish, sometimes 

 tinged with yellow; context white, unchanging; tubes adnate or 

 slightly decurrent, grayish, becoming brownish with age, mouths 

 rather large and angular; spores oblong or ellipsoid, ferruginous- 

 brown, 7.5-10 X 4-5 m; stipe equal or slightly tapering upward, 

 whitish or pallid, slightly reticulate at the apex by the decurrent 

 walls of the tubes, 2.5-5 cm. long, 0.5-1 cm. thick; veil in young 

 plants slight, webby or fibrillose, soon disappearing. 



Found under or near larch trees at Natick, Massachusetts. 



3. BoLETiNUS Berkeleyi MurriU 



Pileus convex above, nearly plane below, becoming somewhat 

 irregular on expanding, 7-9 cm. broad, about 3 cm. thick at 

 the center; surface dry, minutely silky, slightly scaly on the 

 disk, whitish-yellow or dirty-yellowish-brown, sometimes faintly 

 speckled; margin acute, entire, appendiculate; context yellow, 

 taste mild; tubes scarcely decurrent, adnate, plane or somewhat 

 concave in mass, yellow, becoming brownish-yellow with age; 

 spores rather small, oblong, ochraceous-ferruginous, 8-10 X 

 3-4 ju; stipe equal, usually curved, tapering below, brownish- 

 yellow, subfloccose to glabrous, solid or spongy and yellow 

 within, 5-8 cm. long, 0.7-1.5 cm. thick; veil floccose, evanescent, 

 adhering partly to the margin and partly to the summit of the 

 stipe in the form of a slight annulus. 



Occasional in thin woods from New Jersey to Florida and west 

 to Kentucky. 



4. BOLETINUS APPENDICULATUS Peck 



Pileus convex, 10-20 cm. broad; surface glabrous, ochraceous- 

 yellow; margin appendiculate, with a thin, incurved, con- 

 spicuous veil; context pale-yellow, unchanging; tubes yellow, 

 becoming darker or brownish when wounded, mouths rather 

 small, angular, unequal; spores oblong-eUipsoid, pale-yellow, 

 10-12 X 4m; stipe slightly thickened at the base, yellow, solid, 

 5-7 cm. long, 8-12 mm. thick. 



Found under fir trees in the state of Washington. 



