Manchester Memoirs, Vol. xlvi. (1902), No. 9- 1/ 



EXPLANATION OF PLATES. 

 PLATE XI. 



Xenophyton radiculosuin (Hick). 



Fig. I. Transverse section of axis somewhat enlarged. (Cash 

 Collection, No. 150. x 2-^), 

 o.c. = outer cortex. 

 7/i.c. = middle cortex with irregular dark bands 



and rootlet-bundles (r. ^.). 

 s^ = stele split open by a stigmarian rootlet. 



/"4^ 2. A portion of the stele, showing outward passage of a 

 monarch rootlet-bundle with well-preserved phloem. 

 This photograph shows primary and secondary 

 xylem and the well-developed pith. The phloem 

 elements are recognisable by the dark contents of 

 their cells. The regular small-celled outer cortex 

 is easily distinguishable from the darker and more 

 loosely connected cells of the middle cortex (Casli 

 Collection, No. 149. x 25). 



Fig. 3. A portion of the middle cortex, showing the irregular 

 course of the hypha-like rows of its cells. (Cash 

 Collection, No. 148. x 25.) 



