An Abnormal Stem of Lonicera Periclymenum. 235 
insertion of each leaf, a vascular strand, the median leaf trace, 
departed from the stele, leaving a gap in the central cylinder 
(Fig. IV). At a slightly higher level two lateral strands left the 
stele, one on either side of the gap left by the median trace, and 
separated from this by part of the vascular tissue of the stem 
(Fig. V). 
Figs. IV-XI. Diagrammatic Sections through a Node of the Normal 
Stem, in order from below upward. A, stele. B, vascular suppiy to bud. 
C, median leaf trace. D, left lateral leaf trace, d, right lateral leaf trace. 
E, interpetiolar commissure. F, ridge down side of stem. L, vascular tissue 
of leaf. 
