Transition from Stem to Root in Palm Seedlings. 63 
■was worked for transition. Continuing down the axis, the three 
leaves are seen to merge into a central parenchymatous plumule, 
(Fig. 8, v.), with peripherally placed fibrous strands representing and 
continuous with, those of the outermost leaf. More internally is a 
group of scattered bundles, and it is quite possible to say in 
certain cases which bundles are distributed to any leaf. Lower 
down, the cotyledon-sheathds merged into the common mass, and 
Series of transverse sections illustrating transition in Livistona mauntana. 
here the cotyledon-bundles run towards the centre of the axis, and 
lie in the common group of plumular leaf-traces (Fig. 8, vi.) 
It is evident that here transition takes place between the root 
and both cotyledonary bundles and plumular bundles. 
At the stage 4 larger and more centrally placed bundles 
represent the downward prolongations of pairs of cotyledonary 
bundles (Fig. 8, vii.) A little lower all the bundles which have 
shown numerous fusions among themselves become roughly 
