1916] 
BURT—THELEPHORACEAE OF NORTH AMERICA VI 239 
Fructification widely effused, thin, with surface a reticu- 
late, felty web, perforate, not separable, between olive-buff 
and deep olive-buff; in structure 100-150» 
thick, with hyphae thick-walled, nodose-septate, 
giving their color to the fructification but 
nearly hyaline under the microscope, 3-814» in 
diameter, minutely rough-walled near the sub- a 
А ç Fig. 29 
stratum and sending out loosely interwoven y gbrillosus. 
branches which bear clusters of basidia; ba- Spores, hypha 
sidia 18 X би, bearing 4 spores on short sterig- 
mata; spores concolorous with the hyphae, angular, the 
body 8-8% » in diameter. 
The specimen, 6 em. in diameter, is a portion of a large 
specimen and does not show the natural margin. 
On very rotten coniferous wood. Canada. September. 
This species has the general habit and color of Corticium 
vagum and is well characterized by its general habit, pale 
color, and small angular spores. 
Specimens examined: 
Canada: locality not stated, J. Macoun, 25, Sept. 29, 1892. 
30. H. fumosus Fries, Obs. Мус. 2:279. 1818 and 1824. 
Corticium fumosum Fries, Кръст. 562. 1838; Hym. Eur. 651. 
1874; Saee. Syll. Fung. 6:613. 1888. — Phlebia vaga Fries, 
Syst. Mye. 1:428. 1821; Elenchus Fung. 1:155. 1828; Еріст. 
527. 1838; Hym. Eur. 625. 1874; басе. Syll. Fung. 6:498. 
1888; Bresadola, I. R. Ассай. Agiati Atti ПІ. 3:105. 1897.— 
Corticium, sulphureum Pers. Obs. Мус. 1:38. 1796, but not 
Corticium sulphureum Fries. — Odontia fusca Cooke & Ellis, 
Grevillea 9:103. 1881; басс. Syll. Fung. 6:509. 1888, 
Fructification effused, membranaceous, separa- 
ble, with the outer surface more or less overrun 
with intrieate, branching, anastomosing threads, 
Fig. 30 then granular, honey-yellow to drab and fuscous, 
H. fumosus. the margin whitish or yellowish, flaxy-fibrillose, 
гера radiating; in structure about 200, rarely up to 
500и, thick, with hyphae longitudinally interwoven, occasion- 
ally nodose-septate, 214-314» in diameter, thin-walled, hya- 
line, or slightly smoky if the fructification is dark colored; no 
