230 NEW YORK STATE MUSEUM 



ings are commonly known as black knot. The disease soon kills the 

 attacked branches and generally it continues its work till it kills the tree. 

 The spores of the fungus may spread from the wild cherry trees to cul- 

 tivated cherry and plum trees and produce the disease in them. 



HYSTERIACEAE 

 Dichaena faginea {Pers.) Fr. 

 Bark of living beech trees. Very common. 



Hypoderma nervisequum {DC) Fr. 

 Living leaves of balsam fir. Woods east of Brewster farm. 



f 

 DISCOMYCETEAE 



HELVELLACEAE 



Gyromitra sphaerospora {Pk.) Sacc. 

 Decaying wood. Very rare. Adirondack lodge road and Indian 

 pass trail. June and July. Not yet known to occur out of this state. 



Gyromitra escuienta crispa Pk. 

 Groves of young coniferous trees. East of Brewster farm. June. 

 The typical form usually occurs in pine groves or under or near pine 

 trees. It was not seen in North Elba. 



Helvella Infula Schaeff. 

 Decaying wood and ground in woods. Near Connery pond, and 

 Averyville. 



Mitrula phalloides {Bull) Chev. 



Decaying leaves and other vegetable matter lying in water. Indian 

 pass trail and woods southeast of Wood farm. 



Mitrula vitellina irregularis {Pk) Sacc. 



Irregular mitrula 



Damp mossy ground in woods. Near Newman. September. Edible. 

 This differs from the European M. vitellina (Bres.) Sacc. in its much 

 more irregular clubs of which it is scarcely possible to find two alike. 



Leptoglossum luteum {Pk) Sacc. 

 Mossy ground and much decayed wood. Raybrook and near Clear 

 lake. August. 



