450 
Stiles . — The Podocarpeae . 
The leaf-insertion in this species is decussate, and the leaf-traces pass rather 
quickly out of the cortex. Each bundle, as in P. andinus , is furnished with 
a single resin canal. 
In Podocarpus nagi the stem is usually oblong in transverse section 
owing to the decussate arrangement of the leaves and to the fusion of the leaf- 
bases with the stem (PL XLVI, Fig. 3, and Text-fig. 1, d). As in P. andinus 
there is a ring of endarch collateral vascular bundles surrounding the pith. 
How small these primary bundles are and how little xylem beyond proto- 
xylem occurs in them is shown in PI. XLVI I, Fig. 18. In the pith, as well as 
in the cortex, stone cells are of fairly frequent occurrence. In this species they 
Text-fig. i. Diagrams of transverse sections through primary stems, x 30. a, Podocarpus 
andinus ; b, P. elongatus ; c, P. amarus ; d, P. nagi ; e, Dacrydium Franklini. 
appear to occur singly and frequently near the xylem. The resin canals are 
distributed as in P. andinus and P. elongatus , but are relatively much smaller. 
The great peculiarity in the stem of Podocarpus nagi is in the insertion of the 
leaf-trace. Here one of the stem bundles divides into three, the resulting 
bundles of the division consisting of two larger lateral ones and one smaller 
median one (PI. XLVI, Figs. 3 and 4). Each bundle is accompanied by a 
single resin canal. These three bundles then pass upwards and outwards, as 
in the case of Podocarpus andinus . As far as the writer is aware, this is the 
only recorded case among Conifers of a leaf-trace consisting of more than 
two bundles, and even in Podocarpus nagi the three bundles forming the 
leaf-trace result from a single bundle dividing when about to pass out from 
