Feb. 1903.] BOTANICAL SOCIEIY OF EDINBURGH 



347 



The tree-ferns, Dicksonia antarctica, reach a height in 

 humid gullies of 50 ft., but do not ascend higher than 

 4500 ft. 



The maximum number of species flourish between 

 2000 and 4000 ft. in the humid gullies and on the rocky 

 spurs. 



There are 10 genera and 8 identical species common 

 to Arran (Scotlancl) and the Australian Alps. 



Musci (Mosses), 



Of the 70 genera and 170 species of mosses occurring 

 in the Australian Alps, a number are identical with those 

 of Stewart Island (south of New Zealand), and 31 genera 

 and 10 species are common to the Australian Alps and 

 Arran (Scotland). The genera and species common to 

 the Australian Alps and Arran are marked with an 

 asterisk. 



The genera containing more than four species over the 

 whole area at all elevations are as follows : — 



The genera represented by species at the highest 

 elevations between 5000 and 7000 ft. are — 



Bartramia . .5 species. Polytrichum . 1 species. 



Zygodon . . ' _ . . . 



Breutelia . 



Bryum 



Campylopus 



Grimmia . 



Philonotis . 



Meesea 



Atrichum . 



Pogonatuni 



Thus, while the genera Bryiuii and Grimmia contain 

 the greatest number of species at all altitudes, Bartramia 

 and Zygodon have the most species in the hig-hest 

 altitudes. 



LiCHENES. 



Represented in the Australian Alps between 2000 and 



7000/(5. levels by 47 Genera and 95 Species. 

 Most of the species enumerated are common to the 

 sub-alpine areas and the adjacent lowlands, the greatest 



