[VoL. 3 
224 ANNALS OF THE MISSOURI BOTANICAL GARDEN 
but composed for the most part of suberect, branching, 
loosely interwoven, nodose-septate, thick- 
ы walled һурһае concolorous with the fruc- 
SEH Es tification, 4-64 in diameter; basidia with 
4 sterigmata; spores concolorous with the 
fructification, subglobose, sometimes flat- 
tened on one side, echinulate, the body 
Fig. 13 
. pannosus, 6-8 X 9-7, | 
Spore, hypha x640. Fruetifieation 3-6 em, long, 142-3 em. 
broad. 
On rotten wood and bark, usually of frondose species, and 
on the ground in woods. Canada to Louisiana; occurs in 
Europe also. September to December. Probably common. 
H. pannosus and H. isabellimus are species of brown color 
approaching clay-color, and of cottony surface, which cannot 
be distinguished from each other with certainty except by 
microscopic characters. Well-developed fructifications of H. 
pannosus are thicker than those of H. isabellinus but thin 
fruetifieations of the former are frequently collected. H. 
pannosus has nodose-septate hyphae 4—64 in diameter, while 
the hyphae of H. isabellinus are not nodose-septate and next 
to the substratum are 8-104, or more, in diameter, and occa- 
sionally 15a in diameter. KHO solution produces no note- 
worthy color change. The collection from Washington, re- 
ferred with doubt to this species, has the spores with body 
6 X 41%и, aculeate with scattered, very short points. 
Specimens examined: 
Sweden: Stockholm, L. Romell, 225; Femsjo, L. Romell, 228. 
Canada: Quebec, Ironsides, J. Macoun, 277 a. 
New Hampshire: Chocorua, W. G. Farlow, 7, 8, and an 
unnumbered specimen; Shelburne, W. G. Farlow, 1. 
Vermont: Middlebury, E. A. Burt. 
Massachusetts: Magnolia, W. G. Farlow, c; Williamstown, 
W. G. Farlow, 5. 
South Carolina: Santee Canal, Ravenel, 1117, cotype (in 
Curtis Herb., 3007). 
Louisiana: St. Martinville, 4. В. Langlois, cs. 
