19141 
OVERHOLTS—THE POLYPORACEJE OF OHIO 149 
margin thin and acute, often involute, especially on drying; 
context white or whitish, fleshy-tough, becoming firmer on 
drying, 0.5-2 mm. thick; tubes 1-5 mm. long, the mouths whit- 
ish to yellowish, distinctly angular, usually rhomboid or hex- 
agonal, often radiating outward from the stem and longer in the 
radial direction, very variable in size, 0.5-3 mm. long and 
averaging 1-3 to а mm. in transverse direction; stipe lateral or 
rarely subcentral, often rudimentary, not more than 1 cm. long, 
1.5-7 mm. thick. 
On dead branches of deciduous trees, especially Hicoria. 
Common. 
F. striatulus Ellis & Ev. is supposed to differ from Р. cana- 
densis in having a pileus white in color from the first, and in the 
smaller pores. In Ohio both of these forms are found and the 
writer has come to the conclusion that F. striatulus is to be 
regarded as only a form of this rather polymorphic species, for 
the following reasons: First, specimens of F. canadensis fre- 
quently become whitish in color quite early in development; 
second, the small pores said to be characteristic of F. striatulus 
are also frequently found in specimens with the reddish brown 
pileus. In attempting to separate the plants into two species 
one finds reddish brown specimens with either large or small 
pores, and white specimens with either large or small pores. 
Тһе species is illustrated in Hard, Mushrooms f. 309. 
GLOEOPORUS Mont. Hist. Cuba 385. 1838. 
Plants annual, sessile or effused-reflexed; pileus small, thin 
and coriaceous; context fibrous, thin, usually white; tubes short, 
more or less gelatinous or waxy and in our species separating 
from the context in a thin, elastic layer when fresh or when 
moistened. Тһе genus is distinct from all others in the gelat- 
inous and at the same time separable hymenium. Опе species 
only is found in our flora. 
1. G. conchoides Mont. Hist. Cuba pl. 15. f. 1. 1838. 
Sessile or effused-reflexed; pileus dimidiate or conchate, 
0.5-3 x 1—4 x 0.1-0.5 cm., coriaceous when fresh, rigid when 
dry, white or cream-colored, velvety to glabrous, azonate, 
margin thin, acute, with a narrow sterile band below; context 
white, soft-fibrous, 1-4 mm. thick; tubes less than 1 mm. long, 
