68 



OTTO VERNON DARBISHIRE, 



i Si hwed. Siidpolar-Exp. 



Ant- 



Cyanopheliales. 

 Paitneliella MÜLL -Arg. . 



Pannaria Dei 



Psoroma Nvi 



Eiiodcrma Mn L -Arg. . 



Sticta ACH 



Stictina Nvl 



Peltigera Hffm 



Solorina Nvi 



Nephroma Ach 



Nephromium Nvi. . . . 



Collema ACH 



Lepiogium Kbr 



Number of species: 



Z3 



7 

 î 



4 

 3 



Pyrenocarpi. 



Verrucaria PERS. . . . 



Coccotrema Müll.-Arg. 



Arthopyrenia (Mass.) 

 Müll -Arg 



Lepolichen Müll.-Arg. 



Pleurotrima Müll.-Arg. 



Z?« matocarpon (Escuw 

 Tu. Fr 



Endocarpon Ach. . . 

 Thamnolia Ach. . . . 

 Mastodia HooK. et Harv 

 Endocena Cromb. . . 

 Siphula Fr 



Addenda. 



Lefiraria Ach 



We have altogether 86 genera occurring in the regions of Subantarctic America, 

 South Georgia and the true Antarctic. 



The following is an analysis of this figure: 

 Of these 86 genera there occur in 



Fruticul. Foliac. Crust. Total. 



Subantarctic America only Ç II Z~ 4} 



> and South Georgia - 5 2 



> > Antarctic 4 2 8 14 



In all three regions 3 4 '4 



South Georgia only 1 I 



and Antarctic — 



Antarctic only I 2 4 



Total 13 24 49 86 



That is to say of these 86 genera there occur altogether in: 



Fruticul. Foliac. Crust. Total. Species. 



Subantarctic America 12 22 44 78 366 



South Georgia 3 9 10 22 55 



Antarctic 8 8 19 35 106 



The exclusion of a number of genera from the Antarctic and from South 

 Georgia is of course in part due to the absence of trees and of any organic sub- 



