22 NATURAL HISTORY BULLETIN. 



imbricate, reaching 15 cm in diameter, soft, watery when 

 growing, pure white beneath, with smoky tints where bruised, 

 rich brown, variousl3"-shaded, above. When mature the 

 whole structure becomes dry and brittle, the upper surface 

 wrinkled, the context smok}', pallid, wood colored, the 

 hymenium dull. Said to exude at first drops of a resinous 

 consistency, whence the specific name. N. A. F. 406. 



2. PoLYPORUs PUBESCENS {^Schtiniachcr) Fries. 



Pileus from flesh^'-tough, suberose, soft, convex, sub-zonate, 

 pubescent, white throughout; margin acute, at length 3-ellow- 

 ish ; pores short, small, nearh' round, even. 



Rare. Our specimens belong to the variety grayii Ellis 

 and Everhart. The variety differs from the above description 

 chiefly in that the pores are elongate and the pileus propor- 

 tionatelv thin. When drv the whole fungus takes on a 

 3'ellowish, lutescent tint, and the thin margin becoming 

 retracted has the appearance of being very obtuse; very 

 fragile. In form the pilei are flabellate or dimidiate or 

 irregular; usualh' about 2-3 cm long and of indefinite width, 

 effused or extended. When fresh and white rather elegant 

 and showy. On dead birch. N. A. F. 1933. 



3. PoLYPORUS OBTusus Bcvkclcy. 



Pileus thin, pulvinate, fieslw, spong\-, soft, tomentose, white; 

 the margin obtuse; the pores wide, unequal, irregular, sub- 

 gjTose, brown when drv. 



Such is Berkeley's brief description of one of our most 

 interesting species. Perhaps no one at first sight would con- 

 sider a specimen as a Polyporus at all; it looks more like a 

 Dsedalea perhaps. The pores are very large, irregular, 

 almost labyrinthine, and ver^- long, as much as 2 cm. Further- 

 more the hymenophore descends as a trama between the 

 pores in such fashion as to suggest Trametcs^ and the context 

 is delicatel}' zonate. In form the pileus is dimidiate, thick, 

 the margin incurved, obtuse, at first almost white and shaggy 

 tomentose above, at length glabrate and yellowish through- 



