28 American Boletes 



edges blood-red; spores oblong-ellipsoid, smooth, brownish- 

 yellow, with a greenish tint when fresh, 12-15 X 4-5 m; stipe 

 subventricose, tapering upward, blood-red, sometimes with 

 yellow stains, becoming bluish-green when handled, deeply 

 and beautifully alveolate-reticulate its entire length, solid, firm, 

 yellowish within, 7-10 X 2 cm. 



Occasional in oak woods from New England to Virginia and 

 west to Indiana and Tennessee. A very handsome species. 



3. SuiLLELLUS RUBINELLUS (Peck) Murrill 



Pikus convex or subconic to plane, often umbilicate, gregari- 

 ous, 1.5-5 cm. broad; surface reddish-brown, fading to yellow 

 on the margin with age, slightly pubescent, somewhat viscid 

 when moist; margin often recurved, thin, somewhat undulate; 

 context white or pinkish, becoming yellowish when bruised, 

 taste mild; tubes adnate or slightly depressed, 5 mm. long, 

 mouths at first reddish but soon turning brown, not changing 

 color when bruised, small, circular or somewhat angular; spores 

 oblong-fusiform, ferruginous-brown, 10-14 X 3-4 m; stipe equal, 

 slender, even, pinkish-red changing to brown, solid, pale-yellow 

 within, deeper yellow toward the base, often yellow externally 

 at the base, 1-4 cm. long, 2.5-7.5 mm. thick. 



Occasional in coniferous or mixed woods from New York to 

 North Carolina and Kentucky. Glatfelter reported it as the 

 most abundant bolete in Missouri. 



4. SuiLLELLUS Eastwoodiae MurriU 



Pileus thick, compact, hemispheric, solitary, nearly 10 cm. 

 broad; surface smooth, glabrous, shining, not at all viscid, very 

 light brown; margin entire, slightly projecting, concolorous; 

 context firm, nearly white with a yellowish tint, changing to 

 blue when wounded and later returning to its original color; 

 tubes adnate, separating with age, about i cm. long, concave 

 to plane in mass, yellowish, mouths small, angular, pink; spores 

 oblong-ellipsoid, smooth, pale-yellowish-brown under a micro- 

 scope from dried specimens, 11-12.5 X 4-5 m; stipe very much 

 swollen at the center, contracted at the apex and base, even or 

 reticulate, glabrous, concolorous with a rosy tint in certain 

 parts, yellowish at the base, solid, yellowish-white within, 9 cm. 

 long, 7 cm. thick at the center. 



Known only from a few collections in the vicinity of San 

 Francisco, California. 



