American Boletes 13 



13. Ceriomyces auriflammeus (Berk. & Curt.) Murrill 



Pileus convex to expanded, 6-8 cm. broad, 1-2 cm. thick; 

 surface dry, slightly viscid after a rain, tomentose, bright- 

 yellow, sometimes partly covered with a scarlet pulverulence; 

 margin thin, entire; context white, unchangeable, somewhat 

 colored just beneath the pellicle, not bitter; tubes plane or con- 

 vex, adnate, radially elongate near the stipe, decurrent, greenish- 

 yellow, mouths angular, usually slightly scarlet when looked at 

 sidewise, especially in dried plants, rarely conspicuously scarlet 

 over most of the hymenium; spores pale-yellow, smooth, oblong- 

 ellipsoid, 9-1 1 X 3-4 m; stipe enlarged above, usually tapering 

 below, but sometimes bulbous, very variable in size, 5-9 cm. 

 long, 0.5-1 cm. thick, colored and clothed like the pileus, dis- 

 tinctly and beautifully reticulate, sometimes entirely to the base. 



Occasional on thin soil in deciduous woods in New York, 

 Pennsylvania, Kentucky, and North Carolina. Very beautiful. 



14. Ceriomyces parasiticus (Bull.) Murrill 



Pileus convex to expanded, 5-8 cm. broad; surface dry, finely 

 tomentose to glabrous, becoming tessellately rimose, dingy- 

 yellow or cinereous; context whitish; tubes decurrent, of medium 

 size, golden-yellow; sf>ores fusiform, smooth, pale-brownish, 

 12-15 X 4 m; stipe incurved, glabrous, solid, yellow without 

 and within, 4-10 cm. long, 0.5-1 cm. thick. 



Occasional on species of Scleroderma in New England and 

 New York. 



15. Ceriomyces hemichrysus (Berk. & Curt.) Murrill 



Pileus convex, becoming plane or slightly depressed, 3-7 cm, 

 broad; surface floccose-squamulose, golden-yellow, pulverulent, 

 at times rimose; context thick, yellow, sometimes slightly 

 changing to blue when woimded; tubes adnate or decurrent, 

 yellow, becoming reddish-brown, mouths large, angular; spores 

 oblong-ellipsoid, smooth, pale-yellowish-brown, 7-9X2-3/1; 

 stipe short, irregular, tapering below, yellowish-pulverulent, 

 tinged with red, yellow within, 3 cm. long, 0.5-1 cm. thick. 



Occasional on pine roots and stumps in New York, New 

 Jersey, the Carolinas, and Alabama. 



16. Ceriomyces eximius (Peck) Murrill 



Pileus thick, compact, globose when young, becoming convex 

 at maturity, 8-20 cm. broad; surface dry, smooth, subglabrous, 



