[Vor. 1 
120 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
in spore color in the two plants, P. dryadeus having much paler 
spores than P. dryophilus, but for this I cannot vouch. So 
far as known, P. dryadeus has not been collected in Ohio 
but the species has been reported from Michigan and Kentucky. 
Lloyd (Мус. Notes 36. f. 383) gives an illustration. 
53. P. dryophilus Berk. Hooker's Lond. Jour. Bot. 6:321. 
1847. 
Plants annual, sessile; pileus dimidiate, often ungulate, 
3-12 x 7-20 x 1-10 ст., rather rigid, grayish brown, to reddish 
brown, scabrous with an innate, ferruginous pubescence, azo- 
nate or subzonate, margin thick and obtuse; context cinnamon 
or rusty brown, subshining, corky to hard and woody; tubes 
0.3-2.5 em. long, ferruginous-yellow within, the mouths cin- 
namon-brown, angular, averaging 2-3 to а mm.; spores ferru- 
ginous, smooth, ellipsoid to subglobose, 5 x 6.5 y. 
On living Quercus and on logs. August to November. Rare. 
This species was originally described from specimens collected 
at Waynesville, Ohio, by Lea. To the description as given in 
Lea’s catalogue the following note was added: “Nearly allied 
to Polyporus dryadeus, but a smaller, more rigid species with 
larger, differently colored pores. It has also much resemblance - 
to P. gilvus." 
54. P. Schweinitzii Fries, Syst. Мус. 1:351. 1821. 
Plants stipitate or sessile; pileus circular to dimidiate, 5-15 
cm. broad, 0.5-1.5 cm. thick, spongy to soft-corky when fresh, 
firm, rigid, and sometimes friable when dry, ochraceous to 
orange-colored or brown in mature specimens, strigose-tomen- 
tose to almost glabrous, usually more or less zonate, margin 
thin or thick, acute; context yellowish to reddish brown, 
spongy when fresh, usually friable when dry, 0.2-1 em. thick; 
tubes 1-6 mm. long, the mouths yellowish, darker when bruised 
and sometimes dark brown on drying, circular to angular and 
soon irregular, averaging 1-3 to a mm.; stipe present and well 
developed or entirely absent, central or excentrie, agreeing in 
color, pubescence and consistency with the pileus, 0-6 cm. 
long, 1-2 сш. thick; spores (teste Lloyd) white, elliptical, 
smooth, 4 x 6 y. 
Growing on or about Pinus. Autumn. Rare. 
This species is а very variable one, yet quite distinct in habi- 
