Aa 
GENERA OF HyDNACEAE 445 
36. Opontinia Pat. Hym. D’Eur. 147. 1887 
The genus was established on Hyduum denticulatum Pers. 
with four other species. 
37- PHAEODON Schroet. Krypt. Flora Schlies. 3: 458. 1888 
The genus was established on Hydnum tomentosum * Schrad. 
with eight other species. H. tomentosum Schrad. is the same as 
Odontia ferruginea Pers., and hence Phaeodon Schroet. must be 
treated as a synonym of Odontia Pers. 
38. GranpiniA Schroet. Krypt. Fl. Schles. 3: 450. 1888 
This genus was based on Odontia crustosa Pers. with G. 
alutacea ; it is to be regarded as equivalent to Grandinia Fr.; 
otherwise the name is untenable. 
39. KNEIFFIELLA Karst. Finlands Basids. 371. 1889 
The genus was established on Hyduum barba-Jovis Bull., a 
single species. 
40. ScLERODON Karst. Finlands Basids. 360. 1889 
The genus was established on Hyduum strigosum Sw.,a single 
Species. Karsten quotes Gloiodon in the above reference as a 
Synonym of Sc/erodon. But the rules of priority compel us to re- 
gard Sclerodon as a direct synonym of Gloiodon.t 
41. Amauropon Schroet. Krypt. Fl. Schles. 3: 461. 1889 
This genus was founded on Sistotrema viride Alb. & Schw. a 
single species. 
42. THWAITESIELLA Massee, Grevillea, 21: 2. 1892 
The genus was based on 7. mirabilis (= Radulum mirabile B. & 
Br. Jour. Linn. Soc. 14: 61. 1875). Avsingle species. Patouil- 
lard has demonstrated that the genus is identical with Lopharia 
Kalch. & MacOwan and should be regarded as a synonym 
of the latter.t 
43. AsTERopon Pat. Bull. Soc. Myc. 10: 129. 1894 
The genus was established on A. ferruginosum, a single 
Species, 
* This name is untenable, having been used by Linnaeus for a stipitate species in 
Sp. Pl. 2: 1178. 1753. ; 
T This is a case that would seem to justify a method of residues in the determi- 
nation of “‘types.’’ But it seems to us a very exceptional case. 
t Bull. Soc. Myc. France 11: 13. 1895. 
