to a Knowledge of the Hydnaceae 207 



4. Hydnum 



A 



lowish." Pileus even, glabrous, repand, 5-8 cm. wide ; substance 

 fleshy, brittle, white ; stem short, thick, central, or excentric, 2-4 

 cm. high, 1—2.5 cm. thick, expanding into a thick base; teeth 

 slender, 2-4 mm. long, slightly decurrent : spores somewhat irreg- 



Type Loc: Auburn, Ala. (Earle). 



5-4^ by 5.5-7/1. 



The plant, while closely related to H. repandum and H. al- 

 bidiim, seems to be readily distinguished from the former by its 

 white color, glabrous pileus, and small oval spores ; from the lat- 

 ter it is separated by its much larger size, stouter stem, and oval 

 form of spores. The above description is based entirely on dried 

 specimens and needs to be confirmed by comparison with the liv- 

 ing plant. 



- 



5. Hydnum Washingtonianum Ell. & Everh. Proc. Phila. Acad. 



1894: 323. 1894 



Type Loc. : Tracyton, Wash. (Parker). 



This plant has not been reported since it was found by Miss 

 Parker. It resembles H. repandum but the teeth are decurrent 

 half way down the stem and the " substance tougher." 



6. Hydnum caespitosum Banning ; Peck, Reg. Rep. 44 : 74. 



1891 



Icon. : Banning, Fungi of Maryland, //. 

 Type Loc. : Carroll Co., Md. (Banning) 

 The plant has not been 



M 



ning. Her description as quoted by Peck, loc. cit., is too brief to 

 be very satisfactory but is materially supplemented by her plate. 

 The plant, which appears to be closely related to H. repandum, 

 seems to differ from that species, especially in the round, thick, 

 convex, nearly hemispherical pileus, the proportionately thickened 

 stem, equal to a third or a half the diameter of the pileus, and in 

 the flesh turning yellow when cut. 



7. Hydnum diffractum Berk. Lond. Jour. Bot. 6: 323. 1847 



Type Loc. : Waynesville, O. (Lea). 



Since its original discovery by T. G. Lea, this plant has been 



*This is a work in manuscript deposited in the N. Y. State Herbarium at Albany. 



