46 
Sinnott . — The Morphology of the 
enter the integument from the lateral bundles, and in some cases com- 
pletely encircle the nucellus. The lower portion of the nucellus is attached 
laterally to the integument (Fig. 18 ; Diagram 3, e), but is otherwise free 
throughout. The integument, which becomes stony at maturity, is fused 
with the fleshy epimatium everywhere except along a rather narrow strip 
on its dorsal and ventral faces. 
Only very young ovules of P. vitiensis , of the sub -genus Nageia , were 
available for study, but the general arrangement of the vascular tissues could 
be made out and agrees with that described by Miss Gibbs for the species. 
Diagram 3. Poiocarpus ferrugineus. A, vertical section through strobilus ; b-f, successive 
transverse sections from axis to chalaza. 
The reduced cone is similar to that of P. ferrugineus and bears a few sterile 
basal bracts and a single terminal ovule (Fig. 11). At the apex of the cone 
axis a bundle leaves the cylinder to supply the large fertile bract, in the 
lamina of which it branches into several parallel veins. The remainder of 
the vascular ring enters the base of the ovule, where it immediately divides 
into four bundles. These four — the two median ones close together, the two 
lateral somewhat divergent— pass up the dorsal face of the epimatium, and 
at the chalazal end of the ovule enter an anastomosing vascular complex. 
From this they emerge in the downward direction as two small ventral 
strands and two larger ones, exactly lateral. Several small bundles enter 
