gO BULLETIN OF THE NEW YORK STATE MUSEUM. 
Low ravines and sandy places. Wisconsin, 7velease. 
Iowa, Webride. 
The spores easily serve to distinguish this species from 
its allies. The European B&B. spherocephalus has ovoid 
spores, but its tube mouths are minute and rotund and its 
stem is densely squamose. 
Boletus luteus L. 
YELLOW-BROWN BOLETUS 
Hym. Eur. p. 497. Syl. Vol. VI, p. 3. Boletus annulatus Syn. Fung. Car. 
854. Pers. Sym: p. 503: 
Pileus gibbous or convex, covered with a brownish sepa- 
rating gluten, becoming yellowish-brown and virgate-spotted, 
flesh white; tubes adnate, minute, simple, yellow, becoming 
darker with age; stem stout, yellowish and dotted above the 
large membranous brownish-white annulus, brownish-white 
or yellowish below; spores fusiform, yellowish-brown, .00025 
to .0003 in. long, .00012 to .ooo15 broad. 
Pileus 2 to 5 in. broad; stem 1 to 2 in. long, 6 to 10 lines 
thick. 
Pine woods and groves. New York, Peck. Pennsylvania, 
Schweinitz. New England, Avos¢t. North Carolina, Curézs. 
Schwemmtz. California. Harkness, Moore. New Jersey, 
Eilts. 
This is separated from B. elegans by its darker and more 
dingy colors and its large persistent annulus, from B. Clzex- 
tonzanus, by its colors and its stem dotted at the top. In 
some specimens the annulus appears to sheath the lower 
part of the stem, resembling in this respect the western 
B. spherosporus. In others, it forms a broad band with the 
upper margin widely spreading. In dried specimens the 
pileus generally assumes a dull brownish or reddish-brown 
nue! 
Most authors say it is edible. Fries remarks that it is 
