4S CIRCULAR 143, U. S. DEPARTMENT OF AGRICULTURE 
STROBILOMYCES STROBILACEUS. 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. 
sealy, 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. 
Pe 
2 
Bh 
FIGURE 43.—WStrobilomyces 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 APPLANATUS. SHELF FOMES 
In Fomes applanatus the cap or fruiting body is smooth, cinnamon brown, 
pecoming hoary, horizontal, flattened, shelflike, concentrically zoned, semi- 
circular, broadly attached, margin 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 242 to 8 inches broad and 2 inches or more thick. 
This species is perennial and of common occurrence on 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. 
