GENERA OF HyYDNACEAE 443 
22. PLEURODON Quel. Clavis Hym. 198. 1878 
The genus was established on Hydnum occidentale Paul. with 
seventeen other species. 
23. Hypnum Quel. Clavis Hym. 200. 1878 
Quelet published this name with thirty-one species, all resupi- 
nate in form, not one of which we have any reason to suppose 
was known to Linnaeus. No law of nomenclature would seem 
to justify one in regarding such a groupas Hydnum L.* Hydnum 
Quel. must be considered as a distinct idea from Hyduum L. and 
_ the name, therefore, preoccupied by Linnaeus. 
In a later work, the Enchiridion Fungorum, 1886, Quelet 
has wholly ignored any such genus as Hyduum; the species of 
his own. genus of that name being referred almost bodily to the 
genus QOdontia Pers., and the name of the family itself being 
changed from Hydnaceae to Erinaceae. 
24. AURISCALPIUM Karst. Medd. Soc. Faun. et Fl. Fenn. 5: 
27. 4579 
This name was published with A. vulgare (= Hvdnum Auriscal- 
pium L..) and two other species. It is a direct synonym of Auris- 
calpium Gray, ¢. v. 
25. Hypnetium Karst, Medd. Soc. Faun. et Fl. Fenn. 5: 
27. 1879 
This genus was founded on Hydnum suaveolens Scop. with 
eighteen other species. The name is a synonym of Ca/odon Quel. 
gq. v. 
26. Gioiopon Karst. Medd. Soc. Faun. et. Fl. Fenn. 5: 
28. 1879 
The genus was established on Ayduum strigosum Sw. with 
two other species. 
27. Friesires Karst. Medd. Soc. Faun. et Fl. Fenn. 5: 27. 1879 
The genus was established on Hydnum coralloides Scop. (= H. 
coralloides Schaef.) and H. caput-ursi Fr., so the name is a syno- 
nym of Hericium Pers. 
* Karsten has performed the same sort of nomenclatural gymnastics by publishing 
the genus Hydnum with five resupinate species and then added the star feature of quot- 
ing the name of the genus as ‘‘Aydnum Linn.’’! Cf. Hydnum page 438. 
