108 BULLETIN OF THE NEW YORK STATE MUSEUM 
Boletus bicolor Px. 
Two-cOLORED BOoOLETUS 
Rep. 24, p. 78, pl. 2, figs. 5 to 8 
Pileus convex, glabrous or merely pruinose-tomentose, 
dark-red, firm, becoming soft, paler and sometimes spotted 
or stained with yellow when old, flesh yellow, not at all or 
but slightly and slowly changing to blue where wounded ; 
tubes nearly plane, adnate, bright-yellow, becoming ochra- 
ceous, slowly changing to blue where wounded, their mouths 
small, angular or subrotund; stem subequal, firm, solid, 
ved, generally yellow at the top; spores pale, ochraceous- 
brown, .0004 to .0005 in. long, .00016 to .o002 broad. 
 Pileus 2 to 4 in. broad; stem 1 to 3 in. long, 4 to 6 lines 
thick. 
Woods and open places. New York, Peck. Wisconsin, 
Bundy. 
The color of this plant is somewhat variable. In the 
typical form the pileus and stem are dark red, approaching 
Indian red, but when old the color of the pileus fades and 
is often intermingled with yellow. The surface sometimes 
cracks and becomes rimose-areolate. From the European 
B. Barle this species is separated by its solid stem, from 
B. versicolor by its small tube mouths and its red stem. __ 
Boletus glabellus Px. 
SMooTHISH BOLETUS 
Rep. 41, p. 76 
Pileus fleshy, thick, broadly convex or nearly plane, soft, 
dry, subglabrous, smoky-buff, flesh whtte, both it and the 
tubes changing to blue where wounded; tubes nearly plane, 
adnate, ochraceous tinged with green, their mouths small, 
subrotund; stem subequal, glabrous, even, reddish toward 
