[Vol. 10, 1923} 



378 ANNALS OF THE MISSOURI BOTANICAL GARDEN 



Explanation op Plate 



PLATE 15 

 The flax seedling is represented before and after cutting and shows regenerated 



roots and shoots. 



The Bryophyllum leaf shows regenerated roots and shoots at the notches. 



The sweet-potato has a regenerated shoot from the upper cut surface and one 



normally through the outer cortex. 



The horseradish shows its similarity to the sweet-potato. 



