The Biology of Polyporus Pargamenus Fries 171 
within this area. All trees along the inside of the compass 
line were chalked to mark definitely the boundary of the tract. 
The following data was secured for each standing tree within 
this tract: species, diameter (measured to the nearest inch) 
at breast height, condition (as to whether dead or living), 
and the species of fungi growing upon it as evidenced by the 
sporophores upon the trunk. "The principal trees on this 
tract were white oak (Quercus alba Linn.) and scarlet oak 
(Quercus coccinea Muenchh.), the former being by far the 
more abundant, although its average size was much smaller. 
Other species in the order of their abundance were white 
pine (Pinus strobus Linn.), mocker nut hickory | Hicoria 
alba (Linn.) Britton], red maple (Acer rubrum Linn.), 
chestnut [Castanea dentata (Marsh.) Borkh.], and pitch 
pine (Pinus rigida Mill.).*° The data obtained is given 
below, the trees being tabulated by diameter under the 
species. The coniferous trees (37 white pines and 1 pitch 
pine) have been omitted from the summary since the fungus 
in question rarely grows on coniferous timber and these two 
species were not considered to be possible hosts for it. 
* A single pitch pine, the sole survivor of the previous generation, was 
the only representative of this species. 
