GENERA OF HYDNACEAE . 441 
12. Hericium Fr. Syst. Orb. Veg. 88. 1825 
The name was published in the above work without any spe- 
cies being given, but a reference is made to Syst. Myc. 1: 409. 
1821, ‘“Hydna Gomphi.’’ In the latter work, under the section 
Gomphi, four species are described: Hydnum Caput-medusae, H. 
hystrix, H. echinus and H. ramularia ; we must therefore regard 
these as representing Hericium Fr. That the genus, moreover, 
is distinct from Hericium Pers. is positively established by Fries’ 
own comment in Syst. Orb. Veg. 88. “Cum Hericio Pers., cujus 
typus H. coralloides * * * non commutandum.” In Hym. Eur. 
617. 1874, Fries retains only two of the original species, 1. hystrix 
and /7. echinus, while a wholly new species stands at the head of 
the list, WH. Notaristi. Although the name is untenable, it does 
not seem wise to propose a new one until the validity of the species 
composing it is more thoroughly established. 
13. Opontia Fr. Epicrisis, 528. 1836-8 
Fries based this genus on five species of which Hydnum barba- 
Jovis Bull. stands first, but of one of the following species, O. 
Jimbriata, he says “typus generis.” Fries first published the 
name in Obs. Myc. 149. 1815, as a subgenus of Hyduum with 
three species; Hyduum pinastri Fr. standing first and jimbriata 
not being mentioned. 
Fries’ name of Odontia, however, is preoccupied by Odontia 
Pers., which evidently stands for a very different group. I, there- 
fore, propose the name Etheirodon * based on E. fimbriatum (= 
Odontia fimbriata Fries, Epicrisis, 528). 
The Friesian groups of Hericium and Odontia are the ones com- 
monly known by these names and not the older genera of Persoon. 
The discussion of the above four genera well illustrates the loose 
methods of nomenclature formerly in vogue. 
14. GRanpiniA Fr, Epicrisis, 527. 1836-8 
This genus was established on G. polycocca Fr. with six other 
Species, 
15. Kneirria Fr, Epicrisis, 529. 1836-8 
This was established on Thelephora setigera Fr.(= Th. aspera 
Pers,).+ The name is untenable, having been used by Spach in 
* From é€erpa, a tuft of hair, and édotc¢, tooth. 
T Bull. Torrey Club, 25: 631. 1898. 
