Anatomy of Teratological Seedlings. III. 337 
the lateral strands and by the absence of any line of demarcation between 
cotyledon and petiole. 
The modification of the epicotyl is along the same general lines as those 
indicated in the first group, but in the series now under consideration there 
is, with two possible exceptions, no trace of a second leaf at the first node, 
P*- 
Figs, 97-100. Figs. 97, 98 illustrate the details of xylem and phloem distribution of Figs. 93 
and 95. Fig. 99, tracheidal hypocotyledonary complex developed prior to the giving off of the 
basal root whorl from a syncotyl. Fig. 100, typical diarch plate in a Group II seedling. 
though the second node is normal and bears two leaves. Where the 
seedlings are old enough the leaves of the third node are also two in 
number as in the first group. The evidence of epicotyledonary compression 
in the second group is thus as great as that found only in the extreme cases 
of the undoubted syncotyls. The exceptional cases referred to above were 
seedlings which were not discovered until the epicotyl had developed to 
a greater extent than that of the remainder of the series. Their salient 
features are illustrated in Figs. 101-106, and, as may be seen from these, 
