48 



CIRCULAR 14 3, IT. S. DEPARTMENT OF AGRICULTURE 



STROBILOMYCES STEOBILACEUS. PORE CONE 



(Fig. 43) 



The cap is hemispherical or convex, shaggy from numerous coarse, blackish 

 scales, margin more or less appendiculate from the scales and fragments of 

 the veil, which covers the tubes in the young plant ; the flesh is at first whitish, 

 changing to reddish, then blackish where wounded ; the tubes are adnate, at 

 first whitish, becoming blackish with age, mouths large, angular, changing 

 color like the flesh ; the stem is even or tapering above, sulcate at the top,, 

 scaly, colored like the cap. 



The cap is 2 to 4 inches broad ; the stem is 3 to 5 inches long and 4 to 10 

 lines thick. 



Figure 43. — Strobilomyces strobilaceus 



This conspicuous but unattractive plant occurs commonly in woods and along 

 roadsides, singly, in small groups, or occasionally cespitose, from early summer 

 until autumn. 



FOMES 



The genus Fomes is distinguished among the Polyporaceae by the 

 hard, woody character of the species. The hymenophore is bracket 

 shaped ; the tubes are much elongated and stratified, one stratum de- 

 veloping annually. Fomes contains no edible varieties, but comprises 

 many serious tree-destroying species. 



FOMES APPLAXATUS. SHELF FOMES 



In Fomes applanatus the cap or fruiting body is smooth, cinnamon brown, 

 oecoming hoary, horizontal, flattened, shelflike, concentrically zoned, semi- 

 circular, broadly attached, margh? thickened, first white, later becoming 

 brown ; the hymenium is flat, pores small, mouths white, changing to brown 

 when bruised ; internal structure of fibrous-spongy texture, brown in color. 



The cap is 2y 2 to 8 inches broad and 2 inches or more thick. 



This species is perennial and of common occurrence en various deciduous 

 trees. 



FOMES LUCIDUS. LACQUERED FOMES 



In Fomes lucidus the cap is horizontal, irregularly kidney-shaped, blood red, 

 surface uneven, coarsely grooved, polished, corky, light in weight ; the stem is 

 lateral, length variable, polished, same color as the cap ; the tubes are small, 

 white, then tan. 



The cap is 2 to 6 inches broad. 



