﻿Underwood: Two Genera of Basidiomycetes 631 



naturlichen Pflanzenfamilien. Herr Hennings has committed a 

 double error in that he has not only overlooked the original publi- 

 cation of Kneiffiella by Karsten, but also its establishment bv us in 

 1897 as a substitute for Kneiffia Fr., thus making it 

 new generic name "Kneiffiella P. Henn." an exact < x 

 the generic name we had substituted. Herr Hennings* has, how- 

 ever, been careful to galvanize all the species under his new genus, 

 a practice of literary revision always greatly to be deplored and 

 especially unfortunate in this case, as the work will have to be 

 done again. 



appear as a 



ifficlla as a substitute for Kneiffi 

 of Kneiffiella Karst, * which wa 



entirely different plant which has not been included under Kneiffia 

 Fr. we shall make another attempt to relieve the difficulty by pro- 

 posing the following new generic name : 



PYCNODON. f 



[Kneiffia Fr. Epicrisis systematis Mycologici, 529. 1838. Not 

 Kneiffia Spach, Hist. Veg. Phan. 4 : 373. 1835 (Epilobiaceae).] 



[Kneiffiella Underw. Bull. Torr. Bot. Club, 24: 205. 24 Ap. 



1897.] 



[Kneiffiella P. Henn. Die nat. Pflanzenf. i 1 ** : 139. 1898. 



Not Kneiffiella Karst. Krit. Ofversigt af Finlands Basids- 



vampar, 371. 1889.] 



The type of Fries' genus was Thelephora setigera Fr. Elench. 



Fung. 208. 1828, which is a synonym of T. aspem Pers. Mycol. 

 Europ. 1 : 153 (excl. icon.). 1822. The type species will now 

 be known as Pycnodon aspernm (Pers.) 



* Kritisk Ofversigt af Finlands Bas ids vamp ar, 371. 1889. The genus was mono- 

 typic, founded on Hydnum barba-Jovis Bull. ( Odontia barba-Jovis Fr.). 

 t From KiKvog, crowded, and bdovg tooth. 



