84 



Mycologia 



slimy cap and almost tasteless flesh, but the caps can be easily 

 peeled, and they are readily digested when young and fresh. The 

 illustrations are made from specimens grown between sections 

 of poplar trunks placed for several months in the basement of 

 the museum building of the Garden. By separating the sections, 

 an excellent view, as seen in figure 2, was obtained of the early 

 stages of the young sporophores, as they grew outward toward 

 the light from the fruiting mycelium near the center of the trunk. 



Inonotus dryophilus (Berk.) Murrill 

 Oak-loving Inonotus 



Plate 7. Figure 3. X £ 



Pileus thick, unequal, unguliform, subimbricate, rigid, 7-8 X 

 10-14 X 2-3 cm. ; surface hoary-flavous to ferruginous- fulvous, 

 becoming scabrous and bay with age; margin thick, usually ob- 

 tuse, sterile, pallid, entire or undulate ; context ferruginous to 

 fulvous, zonate, shining, 3-10 mm. thick; tubes slender, con- 

 colorous with the context, about 1 cm. long, mouths regular, 

 angular, 2-3 to a mm., glistening, whitish-isabelline to dark ful- 

 vous, edges thin, entire to toothed; spores subglobose, smooth, 

 deep ferruginous, 6-7^; cystidia scanty and short; hyphae deep 

 ferruginous. 



This rare species occurs only upon oak trunks, and has been 

 previously reported from Virginia, Wisconsin and three inter- 

 mediate states. The accompanying figure was made from a 

 rather abnormal specimen found last autumn in Bronx Park on 

 a living white oak. The trunk of this tree was evidently attacked 

 by the fungus from the base up to a height of fifteen or twenty 

 feet, or more, as indicated by the appearance of the sporophores 

 at points where dead limbs had been removed. The white oak 

 is an exceedingly valuable tree, and any fungus that attacks it, 

 even though rare, is of importance to the forester. 



Pholiota lutea Peck 

 Yellow Pholiota 



Plate 7. Figure 4. X \ 



Pileus thick, fleshy, firm, convex to nearly plane, 5-10 cm. 

 broad ; surface silky, squamulose near the center, flavous to 



