128 FUNGI OF NOVA SCOTIA. MACKAY. 



E. aggregata Peck. Collected at Pictou, 25th Aug., 1905, 

 Very common on the fertile aments of Alnus incana as many 

 as two-thirds of them being affected over considerable districts. 

 Spores were forming at date of collection but were not mature. 

 Spores mature about May of the spring following. Alnus 

 viridis does not seem to be so susceptible to its attacks, CLM. 



Helvetia crispa Fr. Middleton, RRG. 



Geopyxis carbonaria (A. & S.) Sacc. Middleton, RRG. 



Peziza vesiculosa Bull. Middleton, RRG. 



Chlorosplenium ceruginosum Tul. Pictou county. Asco- 

 carps on rotting trunks of Fagus ferruginea, 3rd Sept., 1905. 

 Also on decaying Alnus incana. The fructification of this 

 species is said to be rather uncommon, CLM. Middleton, com- 

 monly occurring da rotten wood giving it a green color and mak- 

 ing it phosphorescent, RRG. 



Exoascus robinsonianus Giesenhagen. Deforming 'Jie 

 bracts in the pistillate aments of Alnus incana. Very common, 

 WPF. 



Elaphomyces cervinus (Pers.) Schroter. Pictou, under 

 beech trees; parasitized by Cordyceps ophioglossoides, CLM. 

 Subterranea'n at the base of pine stump, Pictou WPF. 



Claviceps purpurea Fr. Pictou, on barley, 2 Oct., 1905, 

 GLM. On Agroyprum repens, New Glasgow, WPF. 



Cordyceps ophioglossoides Ehr. Collected at Pictou, 23rd 

 Sept., 1905, growing in leaf mould under beech trees in a sub- 

 terranean fungus probably a species of Elaphomyces,, CLM. 

 Parasitic on E.. cervinus, Pictou, WPF. 



Hypomyces riridis (Albertini and Schweinitz). Middle- 

 ton, rare. The same as H. luteo-virens. Identified by Prof. 

 W. G. Farlow, Cambridge, Mass., TJ. S. A. The host in this 

 case was not determined with certainty, but it appeared to be 

 Hygrophorus pudorinus Fr. The gill surface only was attacked, 

 becoming a dark green. 



