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1914] 
OVERHOLTS—THE POLYPORACEJE OF OHIO 109 
the well developed stipe with the decurrent tubes, the usually 
umbilicate pileus, and the friable context when dry. Possibly 
it should be referred to P. Rostkowii Fr. or to P. pallidus Schulz. 
& Kalchbr., both of which some regard as being small scaleless 
forms of P. squamosus Huds. ex Fries. Тһе spores agree well 
with those of P. squamosus, but although it can be shown to be 
related to that species, it is worthy of a distinct name. 
33. P. squamosus Huds. ex Fries, Syst. Myc. 1:343. 1821. 
Boletus squamosus Huds. Fl. Angl. 626. 1798. [2nd ed.] 
Pileus short-stipitate or almost sessile, dimidiate to reniform 
in outline, 6-25 cm. in diameter, 0.5-4 cm. thick, fleshy when 
fresh, firm and rigid when dry, whitish to dingy yellowish or 
brownish, clothed, especially toward the center, with large, ap- 
pressed, brownish scales often concentrically arranged, azonate, 
margin thin and acute; context white, tough, soft-corky when 
dry, 0.5-3.5 em. thick; tubes 2-8 mm. long, decurrent, the 
mouths white or yellowish, large and angular, 1-2.5 mm. in 
diameter; stipe lateral, often rudimentary, black at the base, 
reticulate above by the decurrent pores, 1-5 cm. long, 1 cm. or 
more thick. 
Growing on injured or diseased deciduous trees. Rare. 
Lloyd gives the spores as ‘‘oblong, 5-6 x 12-15 u, hyaline, 
smooth.” Easily recognized by the large pores and the large, 
appressed, brownish scales. The plant is well illustrated by 
Bresadola (Fung. Trident. pl. 133), Freeman (Minn. РІ. Diseas. 
f. 125), Lloyd (Photograph. pl. 5), and Hard (Mushrooms f. 
325). 
34. P. picipes Fries, Syst. Myc. 1:353. 1821. 
P. fissus Berk. Hooker's Lond. Jour. Bot. 6:318. 1847. 
Pileus stipitate, circular to reniform in outline, convex or 
plane, when older usually becoming depressed or somewhat 
infundibuliform, 4-20 ста. broad, 0.1-0.8 em. thick, tough and 
leathery when fresh, very rigid and brittle when dry, sometimes 
yellowish brown but usually dark chestnut-brown to reddish 
brown, usually lighter in color towards the margin, azonate, 
margin very thin, usually wavy and often lobed; context white 
to somewhat ochraceous, leathery when fresh, firm when dry, 
1-7 mm. thick; tubes not more than 2 mm. long, decurrent on 
