Fig. 14. Development of the Archegonium in Pallavicinia radiculosa. 



A-F, x 450; G-L, x 300. 

 A-C. Very young stages, longitudinal sections. 



D. A somewhat older one ; the cap-cell, c, is still undivided. 



E. Cross-section of the apex of a somewhat older stage ; the divisions are somewhat 



irregular. 



F. Cross-section of a very young archegonium. 



G. An older stage. 



H. Apex of a still older archegonium, showing a certain amount of apical growth. 

 I-L. Older stages, v, ventral canal-cell ; 0, egg-cell. 



