38 College of Forestry 
prolificans by Fries is therefore the type of the plant in 
question. 
The synonomy of this variable plant might be extended 
considerably. Murrill (1906, p. 655) states that, according 
to Bresadola, Polyporus dispar Kalchbr. and Polyporus 
simulans Blonski should be added for the European forms 
and that there are probably half a dozen or more from other 
regions. According to Murrill (1. ¢ 2), specimens from North 
America have been. variously Heentncd as Polyporus elon- 
gatus Berk., described from Manila, Polyporus nilgheriensis 
Mont., described from India, and Daedalea ferruginea 
Schum., described from Denmark. 
The Fungus. 
DESCRIPTION OF THE SPOROPHORE. 
Technical Description.—Pileus exhibiting great ecological 
variation, ranging from thin to comparatively thick, tonshs 
ae Jeathery, sessile or affixed by a short tubercle, effused- 
reflexed, imbricate, dimidiate, or flabelliform, frequently 
becoming laterally confluent, broadly or narrowly attached, 
often with cuneate base, 1-7 by 1-7 by 0.1—0.8 em.; surface 
finely villose tomentose, whitish, cremeous, gray, or some- 
times brownish-gray with age, usually but not always 
marked by a few narrow, more or less shining and distinct 
buff to dark brown zones, frequently becoming more or less 
concentrically suleate; margin usually very thin, acute, and 
sterile, sometimes becoming fertile with extreme age, entire 
to lobed, often splitting radially when thin specimens are 
dried, fuscous, violaceous, or whitish; context white or 
whitish, fibrous, usually very thin, rarely more than 1 mm. 
thick; tubes 1-5 mm. long, white to discolored within, the 
mouths whitish to cremeous or often violaceous, especially 
toward the margin, becoming yellowish to yellowish-brown 
with age or upon drying, small, angular, irregular, seriate, 
averaging 3-4 to a mm. in poroid forms, the dissepiments 
thin ind usually becoming irpiciform at an early age, fre- 
quently, however, produced at length in the form of very 
