46 



The Pines of Australia. 





Figure 25. — Transverse section through the base of a macrosporophyll 

 at the junction with the central axis — shown on lower left 

 corner. The thick-walled bodies are the sclerenchymatous 

 cells scattered in the tissue of this organ. C. rhomboidfUt 

 X 80. 



Figore 26. — Transverse section through an early fruit valve. Below 

 the ventral (convex) surface is a series of olco-rcsin cavities 

 of various sizes, and Iheso are subtended by a continuous 

 row of bundles, a feature quite unique amongst Callitris. 

 C. MacUavana. x 6. 



1 

 f 



\ 



1 



I 



Sections to Illustrate the life history and anatomy of the Cone Valves. 



