294 PTERIDOPHYTA. [CH. IX 



that the European plant has rather fewer segments in the 

 leaf-sheaths, and that the Indian plant had somewhat stronger 

 stems. Both of these differences are such as might easily be 

 found on branches of the same species. It is, however, interesting 

 to notice the very close resemblance between the Lower Trias 

 European plant and the somewhat older member of the Glos- 

 sopteris flora recorded from India and other regions, which 

 probably once formed part of that Southern Hemisphere 

 Continent which is known as Gondwana Land'. 



1 Seward (97^). 



