1914) 
OVERHOLTS—THE POLYPORACEJE OF OHIO 141 
habit of growth, the prevailing dull brown color of both hyme- 
nium and pileus, and the smaller-mouthed tubes. In this last 
respect the plant more nearly approaches Т. serialis Fries and 
T. rigida Berk. & Mont. From the former it is separated by 
the browner color of the hymenium, the lighter color of the 
pileus, the internally brown tubes, and the slightly larger 
and more irregular mouths. From the latter it differs chiefly 
in the more glabrous and less developed pileus and the longer 
tubes. 
The type specimens of Т. malicola were collected on the trunk 
of an apple tree by Schweinitz and referred by him to Р. popu- 
linus Fries. Murrill has placed the name as à doubtful syno- 
nym for P. galactinus Berk. Тһе writer has not examined the 
type of T. malicola, but our plants bear no resemblance to 
either P. populinus Fries or P. galactinus Berk. Our plants 
were determined by Lloyd and by Bresadola. 
5. T. mollis Sommerf. ex Fries, Hymen. Eur. 585. 1874. 
Daedalea mollis Sommerf. Suppl. Fl. Lapp. 271. 1826. 
Plants annual or rarely reviving, rarely sessile, more often 
effused-reflexed or entirely resupinate; pileus dimidiate or 
elongate, 0-2.5 x 1-4 x 0.1-0.5 ст., coriaceous to rigid, umber- 
brown to almost black, finely tomentose to glabrous, zonate or 
multizonate, margin thin and acute; context light brown, 
fibrous, less than 1 mm. thick; tubes 2-3 mm. long, rarely in 
two or three layers, mouths light brown or grayish, subcircular 
to somewhat angular, often becoming sinuous or labyrinthi- 
form, averaging 1-3 to а mm.; spores (teste Bresadola) elongate- 
ellipsoid, smooth, hyaline, 9-11 x 4-4.5 и. 
On dead wood. Rare. 
Тһе species differs from T. rigida Berk. & Mont. in the 
distinetly brown and almost glabrous pileus. From T. serialis 
Fries it differs in the light brown context, the much thinner 
pileus and the usually larger and more irregular pores. Тһе 
context is much thinner than in T. malicola Berk. & Curt. and 
the general color is decidedly different. 
6. T. rigida Berk. & Mont. Ann. Sci. Nat. III. 11:240. 
1849. 
Plants annual or rarely reviving, sessile, effused-reflexed or 
entirely resupinate, sometimes imbricate; pileus dimidiate, 
