490 



RESEARCHES ON FUNGI 



distance above the ground. On the standing trunks of dead and 

 dying trees, particularly elms in damp situations, the fungus may 

 be found at a height of several feet . . . Partially buried wood and 

 the partially exposed surface roots of stumps and dead trees are 

 common places of growth, . . . C. velutipes prefers wood in a com- 



FiG. 202. — Collybia velutipes. A cluster of fruit-bodies with dark 

 velvety stipes, removed from the stump of a Maple and viewed 

 somewhat from below. Collected at Ottawa, Canada, by 

 W. S. Odell. Photographed by the Photographic Division of 

 the Canadian Geological Survey. Natural size. 



paratively early stage of decay. It is of little use to look for it on 

 stumps and logs in an advanced stage of decay. The fungus is to 

 be sought in new stump lots rather than in old ones. A stump may 

 bear several crops each year for several years in succession and then 

 cease to bear altogether." ^ 



" The preference shown by Collybia velutipes for the wood of 

 newly killed trees is in harmony with its semi-parasitic habit. The 



^ F. C. Stewart, loc. cit., p. 85. 



