ipig] 



HILL— ANATOMY OF LYCOPODIUM 



227 



the presence of cortical roots. These originate in a manner similar 

 to that described by Miss Stokey^ for L. pUhyoides, and show a 



Fig. I. — L. reflcxum: transverse section of stem showing small stele and 3 cor- 

 tical roots; in the roots phloem is surrounded by a crescent-shaped mass of xylem; 

 root stele is surrounded by very thin-walled cells which generally are crushed and 

 broken in sectioning; outer cortex of root composed of thick-walled cells; X120. 



development in the matter of differentiation of the stele paralleling 

 that described^ for the stem of Lycopodium, in which the xylem 



3 Stokey, Alma G., The roots of Lycopodhim pithyoides. Bot. Gaz. 44:57-63. 

 pis. 5, 6. 1907. 



" Hill, J. Bex, loc. cit. 



