146 HYDNKI. 



Pileus, four to six inches broad, often consisting of smaller 



pileoli, giving it the appearance of a hedgehog. 



Spines, white, elongated, pendulous. 



I am not certain about the identity of this species. It may be the 

 Hydnum caput-ursi, for in appearance they are so much alike. I 

 forwarded a specimen to Prof. Burt, of Middleburg, Vt., who made it H. 

 caput-ursi. 



H. ochraceum. Per. 



Pileus, effuso-reflexed, coriaceous, thin, zonate ochraceous, 



minute, pinkish yellow, often for a long time resupinate. 



This is common on decayed willow branches all throughout the Valley. 

 You seldom meet with a pileate form, and if you do it is merely a 

 narrow rim. 



H. septentrionale. Fr. 



Rare ; specimen found in Spring Creek woods and determined by Prof. 

 C. H. Peck. 



Genus LV. IRPJ^X. 



Lignatile, teeth connected at the base, otherwise like 

 Hydnum. 



I. crassus. B. & C. 



Effused, crustuso-adnate, white, circumference determinate. 

 Spines, compressed, springing from a porous base, con- 

 nected. 



Common on oak fencerails throughout the Valley. 



I. lacteus. Fr. 



Pileus, membranaceous, clothed with stiff hair, more or 

 less sulcate, milk white. 



Spines, compressed, radiate, margin porous. 

 You will find it more often on hickory stumps. 



