466 



RESEARCHES ON FUNGI 



8-10 X &-8 /A, 18-22 X 6-7 fi, and 10-12 /a, respectively.^ We thus 

 see that Collyhia dryophila, in having crowded gills associated with 

 small spores, follows a rule which, although perhaps not without 

 its exceptions, very generally holds among the Agaricineae. 



In most fruit-bodies of Collybia dryophila the surface of the 



pileus and the exterior 

 of the stipe are quite 

 smooth. Occasion- 

 ally, however, in the 

 United States of 

 America (New York, 

 New Hampshire, Ver- 

 mont, Minnesota) ^ and 

 in Canada (Ontario, 

 Manitoba), 3 as well as 

 very rarely in Europe 

 (France),^ fruit-bodies 

 are found in which both 

 the pileus and the stipe 

 bear curious excres- 

 cences which at once 

 suggest the presence of 

 a parasite (Figs. 192, 

 193, 194, A and B). 

 Peck ^ met with some 

 of these abnormal fruit- 

 in 1879, he described the 



Fig. 192. — Collybia dryophila, with stripes bearing 

 Tremella-like outgrowths formerly believed to 

 be due to a parasite, Tremella mycetophila. 

 Collected at Ottawa, Canada, by W. S. Odell. 

 Photographed by the Photograpliic Division of 

 the Canadian Geological Survey. Natural size. 



bodies in the State of New York and 

 excrescences as Tremella mycetojihila. 



The excrescences are suborbicular, depressed, much contorted or 

 gyrose-plicate, fleshy, pruinose, yellowish or palhd bodies which 



^ The dimensions of the spores here given are taken from Rea's British Basidio- 

 mycetae, Cambridge, 1922. 



2 Vide infra, the papers of E. A. Burt and Miss Hone. 



^ I myself have found the excrescences on Collybia dryophila in woods near 

 Winnipeg, Manitoba, and Mr. W. S. Odell in woods near Ottawa, Ontario. 



^ Vide infra, the jiaper of E. Boudier. 



5 C. H. Peck, Report of the New York Museum., vol. xxviii, 1879, p. 53, Plate I, 

 Fig. IV. 



