TORRUBIA. 197 



H. lactifluorum. Schw. 



Parasitic on Russula delica, turning it into an orange red 

 mass, without much deformity. It is often mistaken for a new 

 species, which I did when I first discovered it. 

 Spring Creek woods. Quite common. 



Genus XIII. HYPOCRl^A. 



Perithecia variable, pallid or colored. Asci eight-spored ; 

 sporidia uniseriate, didymous, with two globules. 



The Hypocrea are numerous in our Valley, but not having 

 paid special attention to the different species I would refer you 

 to Ellis and Everhart's synopsis of the North American Hypo- 

 creaceae in Journal of Mycology, Vol. II, 1886, and Vol. Ill, 

 1887. 



H. Richardsonia. 



Found it growing on dead twigs of Populus tremuloides. 



Gknus XIV. EPICHI^OB. Fr. 



Parasitic on grass, dark colored, perithecia fleshy, immersed 

 in a myceloid stroma, sporidia linear. 



]^. Hypoxylon. 



Parasitic on the nodes of Eriophorum viginicum or cotton 

 grass. Stroma surrounding the stem. Very destructive to 

 the host plant. 



Found in a swampy meadow near Trexlertown, Pa. 



Genus XV. TORRUBIA. Lev. 



Stroma vertical, fleshy, clavate, capitate ; perithecia im- 

 mersed ; sporidia linear, raultiseptate. 



