Transition from Stem to Root in Palm Seedlings. 6r 
in the last section so far as its appearance is concerned, but on 
application of the endodermic test, a very distinct cuticularization 
of the walls becomes evident in the cells immediately external to 
the individual bundles, (Fig 7.) This cuticularization is of con¬ 
siderable interest as only occurring in that portion of the cotyledon 
stalk in which the large air spaces are present, being absent, both 
Fig. 7. 
Bundle of Lmsfo>ia-seedling 
shewing endodermis. 
above and below, where the ground tissue is denser. Just above 
the sheathing portion of the cotyledon stalk the bundles are 
reduced to a single ring of eight or nine(Fig. 8, iii.). 
At 7, (Fig. 6), a section through the cotyledon-sheath shows nine 
bundles, seven of which are placed towards one side of the 
