212 Banker : A preliminary Contribution 



15. Hydnum albonigrum Peck, Reg. Rep. 50 : no. 1897 



Type Loc. : Gansevoort, N. Y. (Peck). 



Massachusetts (Vail) ; Moravia, N. Y. (Banker). The plant 

 is readily distinguished by its hard, nearly black central portion 

 surrounded by a spongy-tomentose structure similar to H. spongi- 

 osipes but color gray-black and teeth white. When fresh this 

 tomentose portion is tumid with water which can be readily 

 squeezed out in drops. The plant grows among fallen leaves 

 in wet springy situations. In drying it emits a heavy odor sug- 

 gestive of certain fertilizing phosphates. It seems to be closely 

 related to H. vellereum, with which it should be compared. 



16. Hydnum putidum Atkinson, Mushrooms, Edible, Ppisonous, 



etc. 199.//. 69. f. 188. 1900 



Type Loc: Blowing Rock, N. C. (Atkinson). '' 

 No specimens of this species have been examined but from 

 Atkinson's plate and description it appears to be closely related to 

 the above H. albonigrum Pk. from which it is evidently clearly 

 separated by its larger size, " 8-12 cm. broad," and by its "prom- 

 inent concentric zones." The plant is further described as "re- 

 markable for its peculiar odor, resembling, when fresh, that of an 

 Ethiopian ; for its tough, zonate pileus with a prominent white 

 edge, and the stout irregular stem, resembling the stem of Hyd- 

 num velutinum* with a thick, spongy, outer layer and a central 

 hard core." 



It is worthy of note that we evidently have here a group of 

 closely related species that are especially characterized by the pos- 

 session of a " peculiar odor." It is unfortunate that odors are so 

 difficult to describe. It may be further noted that we also have 

 in this genus a group of species marked by a peculiar double 

 character in the internal structure, consisting of a thick, spongy 

 or tomentose outer layer and a central hard compact portion. 



17. Hydnum suaveolens Scop. Fl. Carn. 2: 472. 1772 

 Type Loc: European. 



Ft. Edward, N. Y. (E. C. Howe) ; Sandlake, N. Y. (Peck) ; Ken- 

 tucky (Morgan) ; Connecticut (Underwood) ; New Jersey (Ellis). 



* This probably refers to the species recognized in this paper as H. spmgiosipes Pk 



