CORDAITEAE 



53i 



radicans, frequent in the Lower Coal-measures of 

 England, which in all probability belonged to some 

 member of the Cordaiteae. All the tissues, both 

 primary and secondary, are well preserved. In this 

 case the roots are usually triarch — sometimes tetrarch ; 



Fig. 191. — Amyeloti radicans (probably a root of one of the Cordaiteae). x, triarch 

 primary xylern ; jr 2 , secondary xylem ; J>h, phloem ; pd, periderm, x 23. S. Coll. 

 450. (G. T. G.) 



in other respects there is sufficient agreement with 

 the French specimens, to have little doubt as to the 

 affinities of our fossil. In Amyelon, at any rate, the 

 origin of the periderm was, no doubt, deep-seated, 

 the cortex being exfoliated. The same was the 

 case in a diarch root associated with a Cordaites from 

 Shore. 



35 



