102 



Mycologia 



Inonotus dryophilus (Berk.) Murrill 

 Oak-loving Inonotus 



Plate 6. Figure 2. X i 



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

 ia-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, concol- 

 orous with the context, about i cm. long, mouths regular, angular, 

 2-3 to a mm., glistening, whitish-isabelline to dark-fulvous, edges 

 thin, entire to toothed ; spores subglobose, deep-ferruginous, 

 6-7 /A ; cystidia scanty and short ; hyphae deep-ferruginous. 



Occasional on living or dead oak trunks throughout the United 

 states, causing serious decay. The specimen figured was taken 

 from a living white oak in the New York Botanical Garden in 

 September, 1912. See Mycologia i : 84 and 9 : 39. 



Ganoderma sessile Murrill 



Sessile Ganoderma 



Plate 6. Figure z. X y2 



Pileus corky to woody, dimidiate, sessile or stipitate, imbricate 

 or connate at times, conchate to fan-shaped, thickest behind, thin 

 at the margin, 5-15 X 7-25 X 1-3 cm. ; surface glabrous, laccate, 

 shining, radiate-rugose, concentrically sulcate, yellow to reddish- 

 chestnut, at length opaque, dark-brown, usually marked near the 

 margin with alternating bay and tawny zones ; margin usually 

 very thin and acute, often curved downward, often undulate, 

 rarely becoming truncate, white, at length concolorous ; context 

 soft-corky or woody, radiate-fibrous, concentrically banded, 

 ochraceous-fulvous ; tubes 0.5-2 cm. long, 3-5 to a mm., brown 

 within, mouths circular or angular, white or grayish-brown, edges 

 thin, entire ; spores ovoid, obtuse at the base, attenuate and trun- 

 cate at the apex, appearing verrucose, yellowish-brown, 9-1 1 X 

 6-8 /x; stipe laterally attached, usually ascending, irregularly 

 cylindric, 1-4 X 0-5-I-5 cm., resembling the pileus in color, sur- 

 face and substance, often obsolete. 



Frequent on diseased trunks and dead stumps from New Eng- 

 land to Ohio, Missouri, and southward. Described in 1902 from 

 sessile forms found on stumps of deciduous trees about New 



