BOLETI OF THE UNITED STATES Hz 
IPTNSUICY SIGONG Wane Ate an oo On GRINNa UES RIENCE ae I 
Te NSB GUIS Wie aes cha acy nes GA ey RR ee a ea art B. Russellii, 
1. Stem red in the depressions, tubes tinged with green....... B. Morgani. 
ep orem~ypale-vellows tubesimot ereemisie.- sc. scas sss sess. B. Betula. 
Boletus Russelli Frost 
RussELL’s BoLetus 
Bull. Buff. Soc. 1874, p. 104 
Pileus thick, hemispherical or convex, dry, tomentose- 
sguamulose or fasciculately red-prlose, yellowish beneath the 
tomentum, often rimose-areolate, flesh yellowish, unchange- 
able; tubes subadnate, often depressed around the stem, 
rather large, dingy-yellow or yellowish-green; stem very 
long, equal or tapering upwards, roughened by the lacerated 
margins of the reticular depressions, ved or brownzsh-red; 
spores olive-brown, .0007 to .o00g in. long, .0003 to .0004 
broad. 
imiletisu5)to 410. broad) stem! 3) to 7 in. long, 3 to 6 limes 
thick. 
Woods and open places. New England, vost. New 
Morkweeoe) North Carolina, C./2),Cx772s) | New jiersey, 
Elis: 
This is distinguished from the other species by the dry 
squamulose pileus and the color of the stem. The latter is 
sometimes curved at the base. 
Boletus Morgani Px. 
Morcan’s BoLetTus 
Bull. Torr. Bot. Club, Vol. X, p. 73, tab. 35 
Pileus convex, soft, glabrous, vesczd, red or yellow, or red 
fading to yellow on the margin, flesh whitish tinged with 
red and yellow, unchangeable; tubes convex, depressed 
around the stem, rather long and large, bright-yellow be- 
coming greenish-yellow; stem elongated, tapering upward, 
