170 MYCOLOGICAL NOTES FOR 1920 
not separable from the context; stem excentric, nearly lateral, 
deep indigo-blue, pallid within, glabrous, 2.5 cm. long, 0.5 cm. 
ain spores snares. hyaline, 4-5 uw in diameter; cystidia 
ene dried plant is dark bluish black on the pileus and stem, 
and the hymenium has become brown. 
10. Polyporus compactus sp. nov. 
Plants resupinate to narrowly reflexed or cushion-shaped, 
the pileus not more than I cm. broad, and 1.5 cm. thick, in re- 
supinate condition 3-8 mm. thick, white or gray in color, cor 
watery when fresh, firm and compact when dry, glabrous or 
practically so, the margin rounded and obtuse; context light 
wood color, friable but compact when dry, taste mild; tubes 
oblique, less than 2 mm. long, often lacking or poorly erckiged. 
the mouths subcircular, averaging three or four per mm., white; 
dissepiments rather thick and rigid; basidiospores ellipsoid or 
ovoid, often with a ee truncate aare ome 7.5-9 X 4.5-6 
ae hlamydospores (?) abundant on the hymenium and the 
hyphae of the context, subglobose to ‘rasta slitpeoid, colorless 
or paar gree nish or yellowish under the microscope, 7.5-9 
X 6-7.5 u 6-7.5 uw in diameter; basidia large, pyriform, 9-10 
yin panies cystidia mied with the basidia as ee pia narrow, 
flask-shaped organs 3-4 & in diameter; hyphae of two kinds: 
(a) large hyaline, unstaining hyphae, often Oe piled, nes 
deeply staining: and much branched hyphae ks at least 
some of the chisniydoaporce with a few cross walls and clamps, 
diameter 2-3.5 u. [PLATE 9, FIGS. 5 and 6; TEXT FIGS. 9-14. 
_ On dead standing trunks or on stumps of Quercus, especially 
Q. alba. 
Specimens are at hand as follows, the first mentioned being 
designated as the type: 
New Brunswick, New Jersey, on dead standing Quercus alba, 
August 25, 1920, Overholts & West, No. 7873; Lamar, Clinton 
County, Pennsylvania, on dead standing Quercus alba, July 26, 
1920, Overholts Herb. No. 7525; State College, Pennsylvania, on 
oak stump, October, 1920, No. 7173; New Brunswick, New 
Jersey, on dead Quercus alba, August 21, 1918, E. West 343, 
No. 7584; New Brunswick, New Jersey, on dead standing oak 
trunks, June 16, 1919, E. West 414, No. 7526. 
After this manuscript was submitted for publication, the 
specimens that had been previously designated as the types and 
from which the photographs for this article were made, were 
Fetes ee eae ee 
ies 6b 5 ee aN 
