[Vol. 10, 1923] 



380 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Explanation op Plate 



PLATE 16 



a. Normal cross-section through flax stem. 



b. First divisions of epidermal cells. 



c. Further divisions of inner rows formed in b. 

 d-e. Further development of regenerated bud. 

 (Camera-lucida drawings X 400.) 



