[Vor. t 
140 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
white or slightly discolored, sometimes slightly glistening, 
cireular to angular, averaging 3 to a mm., the walls firm and 
entire; spores (teste Bresadola) hyaline, elongate, 7-10 x 3-3.5 y. 
On dead wood. . Rare. 
The white pores and the internally white tubes contrast 
strongly with the rich brown color of the pileus. It is distinct 
from T. rigida Berk. & Mont. in the glabrous, thicker pileus. 
From T. верішп Berk. it differs in the much smaller pores 
and the brown pileus; T. malicola has no white color in the tubes. 
and the dissepiments are much thicker. 
3. T. suaveolens L. ex Fries, Syst. Myc. 1:366. 1821. 
Boletus suaveolens L. Sp. Plant. 1177. 1753. 
Plants annual, sessile; pileus dimidiate, 3-9 x 6-14 x 1-3 
ст., corky when fresh, firm and rigid when dry, white to grayish 
or slightly yellowish, finely villous-tomentose to glabrous, 
azonate, margin thin or thick, acute; context white or pallid, 
compact-corky to somewhat indurate, 0.5-2 cm. thick; tubes 
0.2-1.5 em. long, the mouths white or cinereous, circular to 
slightly angular, averaging 1-3 to a mm. 
On dead or diseased Saliz. Rare. 
Distinguished from T. Peckii Kalchbr. by the prevailing 
whitish color and the more nearly glabrous pileus. 
4. T. malicola Berk. & Curt. Journ. Acad. Nat. Sci. Phil. 
II. 3:209. 1856. 
Plants annual or reviving for two or three seasons, effused- 
reflexed or entirely resupinate; pileus very narrow, 0-1 x 1-5 
X 0.3-0.8 cm., coriaceous and leathery when fresh, сотку when 
dry, avellaneous to cinnamon-brown or wood-colored, azonate, 
margin thick but acute; context wood-brown or lighter, soft- 
corky, 2-5 mm. thick; with a distinct pleasant odor when fresh; 
tubes 2-5 mm. long, sometimes indistinctly stratified in two or 
three layers, mouths wood-colored to cinnamon-brown, circular 
to angular or somewhat sinuous, averaging about 2 to a mm., 
the walls thick and entire; spores white, smooth, oblong, 2.8 
-8.5 x 7.5-10 и. 
Growing on dead wood of deciduous trees, especially species 
of Acer. Common. 
Entirely distinct from T. sepium Berk. in the semiresupinate 
