104 BULLETIN OF THE NEW YORK STATE MUSEUM 
mycelium yellow; spores oblong, minute, dingy-ochraceous. 
Var. mutabilis. Flesh slightly changing to blue where 
wounded; stem reddish, yellow within, sometimes eccentric ; 
spores oblong-elliptical, .c003 to .00035 in. long, .ooo12 to 
.00016 broad. 
Pileus 1:5 to 2.5 in. broad; stem about 1 in, long3 toe 
lines thick. 
Roots of pine, Pexus palustrzes. The variety on stumps 
of Penus strobus. 
South Carolina, Ravenel. North Carolina, Curtzs. New 
York, Peck. 
The original description attributes much larger dimen- 
sions to this plant than those given here and in Grevillea, 
the pileus being 6 to 8 in. broad, the stem 1.5 in. thick. 
The species is remarkable for its habitat, which is lignicolous. 
The New York variety grew on a stump of white pine. 
By its eccentric stem it connects this genus with Boletinus, 
through Boletznus porosus. According to the authors of 
this species it resembles Boletus varzegatus. 
Boletus Ravenelii B. & C. 
RAVENEL’S BOLETUS 
Ann. Mag. Nat. Hist. 1853, p. 13. Grevillea, Vol. I, p. 35 
Pileus convex or nearly plane, slightly vesced when young 
or morst, covered with a sulphur-yellow pulverulent tomen- 
tum, becoming naked and dull red on the disk, flesh whitish ; 
tubes at first plane, aduate, pale-yellow, becoming yellowish- 
brown or umber, dingy-greenish where bruised, the mouths 
large or medium size, subrotund ; stem nearly equal, clothed 
and colored like the young pileus, yellow within, with a 
slight evanescent webby or tomentose annulus; spores 
ochraceous-brown, .0004 to .0005 in. long, .0002 to .00025 
broad. 
