Polyporus perplexus. Pk.
Figure 330.—Polyporus perplexus. Two-thirds natural size.
The pileus is spongy-fleshy, fibrous, sessile, commonly imbricated, and somewhat confluent, irregular, hairy-tomentose to setose-hispid, grayish-tawny, or ferruginous, the margin subacute, sterile, the substance within tawny-ferruginous, somewhat zonate.
The pores are two to three lines long, unequal, angular, the dissepiments becoming brownish-ferruginous with age or where bruised. The spores are ferruginous, broadly elliptical, .00024 to .0003 inch long and about .0002 broad. Peck.
This is very abundant on beech logs, growing quite large, massive, imbricated, and confluent, the pileoli being often two to four inches broad. It is very closely related to P. cuticularis and P. hispidus. It can be easily distinguished from P. cuticularis by means of its straight margin, and from P. hispidus by its small size and smaller pores. Found from September to November.
Polyporus hispidus. Fr.
Pileus is very large, eight to ten inches broad and three to four inches thick, compact, spongy, fleshy but fibrous, dimidiate, with occasionally a very short stem; generally very hairy, but sometimes smooth; the pileus is often marked with concentric lines which seem to indicate arrested vegetation; brown, blackish, yellowish or reddish brown, below pale-yellow or rich sienna-brown, margin paler.
The pores are minute, round, inclined to separate, fringed, paler. The spores are yellowish, apiculate, 10×7µ. Often found on living trees, the plant gains entrance to the living stem through the bark, by means of a wound made by some agency, as a bird or a boring insect; soon a mass of mycelium is formed, and from this the fruiting body is produced.