1914) 
OVERHOLTS—THE POLYPORACEZ OF OHIO 119 
ңі. P. hispidus Bull. ex Fries, Syst. Myc. 1:362. 1821. 
Boletus hispidus Bull. Herb. Fr. pl. 210. 1791. Polyporus 
endocrocinus Berk. Hooker's Lond. Jour. Bot. 6:320. 1847. 
Plants annual, sessile, sometimes imbricate; pileus dimidiate, 
6-20 x 9-25 x 2-6 cm., spongy and watery when fresh, firm 
and rigid when dry, yellowish brown to rusty red, soft from the 
covering of the dense hirsute or hispid tomentum or pubescence, 
azonate, margin thick or thin, obtuse or acute; context usually 
light yellowish brown above and dark reddish brown next 
to the hymenium, fibrous, firm when dry, 1-5 em. thick; tubes 
0.6-1.5 em. long, mouths yellowish brown becoming darker 
where bruised, cireular, then angular, averaging 2-4 to а mm.; 
spores yellowish brown, smooth, broadly ovoid to ellipsoid, 
6.5-7 x 7-9.5 и. 
On living trunks of deciduous trees. September to December. 
Rare. 
Much larger than P. cuticularis Bull. ex Fries, and P. radiatus 
Sow. ex Fries, and expecially distinet by the hirsute or hispid 
pubescence. Іп point of size it more nearly approaches р» 
dryadeus Pers. ex Fries, and P. dryophilus Berk., but easily dis- 
tinguished from them by the pubescence. 
32. P. dryadeus Pers. ex Fries, Syst. Myc. 1: 374. 1821. 
Boletus dryadeus Pers. Obs. Myc. 3. 1799. 
Plants sessile; pileus dimidiate, applanate, 6-30 x 8-35 x 2-6 
em., spongy and watery when fresh, more or less corky or 
woody when dry, grayish brown to dark brown or black in 
old specimens, glabrous, azonate, margin thick and obtuse, 
distilling drops of water when young and growing; context 
umber-brown to rust-colored, subshining when dry, soft and 
watery, corky or woody on drying, 1.5-4 cm. thick; tubes 
0.3-2 cm. long, mouths grayish brown, darker on drying, circular, 
then angular, averaging 3-5 to a mm.; spores (teste Bresadola) 
globose or subangular, smooth, yellowish, 8-9 x 7-8 y. 
On living trunks of Quercus. September to November. 
Rare. 
Very closely related to P. dryophilus Berk., and probably the 
two have been confused in this country. Р. dryadeus is usually 
considered to be a more applanate form and much larger than 
P. dryophilus. There is also said to be a decided difference 
