424 



VEGETATION OF THE CARBONIFEROUS PERIOD 



this is represented with the cones at the ends of the branches, borne as 

 the Lepidodendrons did theirs, and all of a uniform size.* The same 

 variety, however, repeatedly occurred with some of its branches, as in 

 (Fig. 13), clothed with slender patent squarrose leaves ; whilst others had 



the branches slender, as in (Fig. 14), and covered with small and closely 

 appressed leaves. In figure (18) the whole habit is widely different ; 

 and the leaves from three parts of the plant are so dissimilar, that had 



* Though this species bears cones whose size, shape, &c, is constant, the majority of 

 the species are extremely variable in this respect, as were the Lepidoslrobi : this is illus- 

 trated in my remarks on the latter genus. 



