100 BULLETIN OF THE NEW YORK STATE MUSEUM 
them .00048 in. long, .ooo16 broad. In the American plant 
they are .0004 to .0005 in. long, .co016 to .c002 broad. 
Fries in Elenchus p. 126 describes the pileus as 3 to 6 
inches broad and 1 to 2 inches thick with a stem 3 inches 
long and 1 inch thick. The American plants which I have 
seen are scarcely so large. Cordier classes it among the 
edible species. 
Boletus mitis Kromsu. 
Mitp BoLetus 
Hym. Eur. p. 499. Syl. Fung. Vol. VI, p. 6 
Pileus convex, then plane or depressed, firm, viscid, 
alutaceo-carneus, reddish-ferruginous when dry, flesh pale 
grayish-yellow; tubes short, olivaceous or golden-yellow, their 
mouths compound, angular, unequal ; stem firm, short, even, 
narrowed toward the base, colored like the pileus; spores 
0005 to .00055 in. long, .coo16 broad. 
ileus 20 255) im) broad "stem 2) to 2sns lone 
Mixed woods. New England, Frost. 
This species is unknown to me and is recorded by Mr. 
Frost only. 
Boletus unicolor Frost Ms. 
ONE-COLORED BOLETUS 
Pileus broadly convex or nearly plane, viscid when moist, 
even, sometimes streaked as if with minute innate brown 
fibrils, pale-yellow, flesh fale-yellow, tubes adnate or slightly 
decurrent, rather short, compound, /emon-yellow, becoming 
darker with age; stem even, equal or narrowed toward the 
base, colored like the pileus ; spores reddish-yellow, .00035 
to .00045 in. long, .00016 broad. 
Pileus 2 to 4 in. broad; stem 2 in. long, 4 to 6 lines thick. 
Pine woods and open sedgy places. New England, /vos¢. 
Specimens not seen. The species seems too near B. 
