GEOGRAPHICAL DISTRIBUTION. 51 



or who have perused the Botanical Appendix to Sir John 

 Franklin's Voyage to the Polar Sea, will find a great ana- 

 logy between the Mosses of that country and our own. 



In Asia are found, besides many new genera and species, 

 a large number of species well known in Europe, thus show- 

 ing their simplicity of structure and their capability of adapt- 

 ing themselves to change of cUmate and vicissitudes of 

 temperature. As might be expected, when we transport our- 

 selves to the distant islands and continents of the southern 

 hemisphere, tenanted and clad by so many curious forms, 

 we find a greater diversity in tliis, as well as the other de- 

 partments of botanical science. Not to mention the riches 

 of the humid districts of Patagonia, whence Dillenius re- 

 ceived many fine species, what an interesting addition 

 was made to science by the discoveries of Menzies in New 

 Zealand ! while in New Holland and Yan Diemen's Land 

 the cryptogamic flora, including the Mosses, is, like its 

 fauna, singular and pecuHar, presenting genera and species 

 analogous in many respects to those of the Old World, but 

 yet with some peculiarity of structure rendering them quite 

 unique. Por instance, in New Holland " we have, instead 

 oi Folytnclia, a singular Moss — Bawsonia pohjtrichoides ; 

 instead of the usual forms of Gymnostoimim, we have those 



