1917] 
BURT—THELEPHORACEAE OF NORTH AMERICA. VIII 253 
On white oak bark. Lake Geneva, Wisconsin. July. 
This collection was at first referred to C. olivascens, but it 
differs from it in having no olivaceous component in its color, 
and its spores are subglobose and slightly subangular and its 
hyphae not nodose-septate. The fructifications are suggestive 
of Corticium arachnoideum in forming a delicate hymenial 
pellicle which is supported on a very thin and loose subicu- 
lum, but the hymenium and the spores are colored. 
Specimens examined: 
Wisconsin: Lake Geneva, E. T. € S. A. Harper, 958, type. 
11. C. dryina (Berk. & Curtis) Massee, Linn. бос. Bot. 
Jour. 25: 135. 1889. 
Corticium dryinum Berk. & Curtis, Grevillea 1 : 179. 1873; 
басс. Syll. Fung. 6: 634. 1888. 
Type: type and cotype in Kew Herb. and 5% (7 
Curtis Herb. respectively. O «2 
Fructification effused, thick, dry, adnate, 
velvety, drying snuff-brown both externally 
and within; hymenium even, velvety; in 
structure 500-1000 ц thick with (1) next 
to the substratum a thin layer composed 
of closely interwoven, thick-walled, rigid 
hyphae 4414 шіп diameter, nodose-septate, 
not inerusted, concolorous with the fructi- 
vitii "тн VET ут 
КИ 4 vi ) 
TA p ШІ a | 
с И wht и М 
n ut k И Гори ^i 
M к 
V RUD X ТҮ 
VOR ШЕРТТІ n UA и 
ШОО Ж йү, 
ф AN “of, 
fication, and with (2) a broad stratose hy- 
menial layer made up of about 4 or 5 sets 
of hymenia and supporting subhymenial 
layers whose hyphae are erect, branching, 
Fig. 11 
Section of fructifica- 
ге showing stratose 
rueture X45; 
габ. х 665. 
concolorous, 4-4% y in diameter; по cys- 
tidia; basidia colored like the fructification, with 4 sterigmata; 
spores concolorous with the fructification, even, curved, 
pointed at the place of attachment, 8-9»x(315-4 д. 
Fructification probably large, in the specimens known being 
about 4 em. long, 3 em. broad, and not having the original 
margin. 
On rough surface of decaying oak wood. Alabama. 
vember. 
No- 
