[Vol. 3 

 224 ANNALS OF THE MISSOUEI BOTANICAL GARDEN 



but composed for the most part of suberect, brancMng, 



loosely interwoven, nodose-septate, tbick- 

 walled hyphae concolorons with the fruc- 

 tification, 4-6/* in diameter; basidia with 

 4 sterigmata ; spores concolorous with the 

 fructification, subglobose, sometimes flat- 

 tened on one side, echinulate, the body 

 H. plls. 6-8 X 5-7^. 

 Spore, hypha x640. Fructification 3-6 cm. long, l%-3 cm. 



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. isahellinus 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. 

 parmosus are thicker than those of H, isahellinus but thin 

 fructifications of the former are frequently collected. E. 

 pannosus has nodose-septate hyphae 4-6)1* in diameter, while 

 the hyphae of H, isahellinus are not nodose-septate and next 

 to the substratum are 8-10/x, or more, in diameter, and occa- 

 sionally 15/* 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 4%/x, aculeate with scattered, very short points. 

 Specimens examined: 



Sweden: Stockholm, L. Romell, 225; Femsjo, L. Romell, 228, 



Canada : Quebec, Ironsides, J. Macoun, 277a. 



New Hampshire: Chocorua, W, G. Farlow, 7, 8, and am, 



unnumbered specimen; Shelburne, W. G. Farlow, 1, 

 Vermont: Middlebury, E, A. Burt. 

 Massachusetts: Magnolia, W, G. Farlom, c; Williamstown, 



W. G. Farlow, 5. 

 South Carolina: Santee Canal, Ravenel, 1117, cotype (in 



Curtis Herb., 3007). 

 Louisiana: St. Martinville, A. B. Langlois, cs. 



