American Boletes ii 



Extremely common throughout temperate North America 

 in woods and groves. An edible species easily recognized by its 

 rough stipe. 



8. Ceriomyces GiasEO-ROSEUs Murrill 



Pileus irregularly convex, 7 cm. broad; surface even, slightly 

 viscid when moist, light-grayish-flesh-colored; margin thin, 

 entire, fertile; context white, unchanging, mild; tubes con- 

 colorous, slightly sinuate, nearly plane in mass, mouths small, 

 angular, edges thin; spores oblong-ellipsoid, almost rod-shaped, 

 with rounded ends, smooth, yellowish-brown, 11-13 X 2.5-3 /*; 

 stipe concolorous, tapering upward, somewhat fibrous, sub- 

 glabrous, even, hollow or stuffed, 7.5 cm. long, nearly 2 cm. thick. 



Collected once near Mobile, Alabama. 



9. Ceriomyces conicus (Rav.) Murrill 



Pileus convex or subconic, 2.5-5 cm. broad; surface clothed 

 with fasciculate, appressed, yellowish flocci; context white, 

 unchangeable, tasteless; tubes ventricose, flesh-colored, becoming 

 darker at the maturity of the spores, mouths small, angular, 

 edges subfimbriate; spores fusiform, smooth, subferruginous, 

 14-16 X 5-6/*; stipe tapering upward, pale-yellow, glabrous, 

 not reticulate, 5 cm. long, 12 mm. thick. 



Known only from the original collection in damp pine woods 

 in South Carolina. 



10. Ceriomyces Vanderbiltianus Murrill 



Pileus subconic, 2-3 cm. broad, 1-2 cm. thick; surface smooth, 

 dry, conspicuously ornamented on the umbo with dense, pointed, 

 imbricate, dark-purple scales, which become gradually smaller 

 and give place to minute purplish specks near the margin, the ' 

 color changing from atropurpureous to latericeous; margin thin, 

 undulate, pale-roseous, with a distinct inflexed sterile portion 

 I mm. broad; context thick, fleshy, firm, cream-colored, un- 

 changeable, taste sweet or very slightly bitter; tubes adnate, the 

 longest not over 4 mm., salmon-colored near the margin, in- 

 carnate as the spores mature, mouths angular, i mm. or less 

 broad, elongate to 2 mm. near the stipe, edges thin, entire; 

 spores oblong-ellipsoid, smooth, pale-ochraceous-brown, 9-12 

 X 2-3 m; stipe curved, cylindric, slightly enlarged above, even, 

 delicately pruinose to glabrous, deep-salmon-colored, changing 

 to incarnate, darker on bruising, lighter above with a slight 

 glaucous bloom, finely purplish-dotted like the margin of the 



