J O Cincinnati Society of Natural History. 



to he a rather doubtful production ; there is no record of its ever 

 having been found again, and Mr. Berkeley does not enumerate it 

 in the Notices of N. A. Fungi. 1 have never met with anything 

 that would answer to it in any way. 



IV. Apus. Pileus sessile, dimidiate, marginate, of'ten effuso- 

 reflexed. 



c. Pileus fleshy. 



9. H. ciRRHATUM, Pers. Pileus fleshy, expanded, pallid, 

 cirrhate-fibrillose above with scattered decumbent abortive aculei ; 

 the margin fmibriate, incurved. Aculei very long, a little tough, 

 equal. 



In woods on old trunks, rare. Simple or imbricated, the single 

 jnlei somewhat reniform and 1-2 inches in breadth ; the spines 

 half an inch or more in length. It varies in color, being white, 

 yellowish and rufescent. 



10. H. pui.cHERRiMUM, B. and C. Pileus fleshy fibrous, alu- 

 taceous, hirsute; the margin thin, entire, incurved. Aculei short, 

 crowded, efpial. 



In woods on old trunks, common. Imbricated and laterally 

 confluent, the single pilei 2-4 inches in breadth and projecting 2-3 

 inches. The color varies from white through alutaceous to yellow- 

 ish ; the texture is fibrous with a fibrous-hirsute surface; sometimes 

 there is a faint zonate arrangement of the fibers of the surface. 

 The spines scarcely exceed a (piarter of an inch in length ; they 

 take on a rufescent hue in drying 



11. H. .SF.PTKNTRIONALE, Fr. Fleshy-fibrous, tough, pallid. 

 Pilei innumL-rable, plane, scalariform, connate beliiiul into a thick 

 solid body, the margin straight, entire. Aculei crowded, slender, 

 equal. 



In woods on standing trunks, rare. The masses of pilei ar- 

 ranged one above another and fused together behind are sometimes 

 a yard or more in extent; the single pilei are 2-6 inches in breadth 

 and project 3 inches or more, the spines are about half an inch in 

 length. This magnificent Hydnum "the largest of the genus," 

 grows even more luxuriantly with us than in Sweden. 



d. Pileus eoriaceous. 



12. II. (.I.AHRF.SCF.NS, B. and Rav. Pilei effusoreflexed, cori- 

 aceous, thin, velvety then glabrate, concentrically sulcate, brown- 

 ish; the margin even. Aculei crowded, long, slender, rufous. 



