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EXPLANATION OF PLATE XXI. 
Illustrating Messrs. Brooks and Stiles’s Paper on Podocarpus. 
All the figures are of Podocarpus spinulosus. 
Fig. 1. Microsporophyll as seen in radial section through the cone, x 63. 
Fig. 2. Microsporophyll showing oblique dehiscence of sporangia, x 63. 
Figs. 3-8. Sections of pollen-grains showing contents. Stained with Heidenhain’s Iron Alum 
Haematoxylin and Orange G. x 725. 
Fig. 9. Diagram of female fructification indicating the position of the sections shown in the 
following diagrams. 
Figs. 10-18. Diagrams representing sections through the female fructification at different 
levels. 
Fig. 19. Transverse section of the vascular bundle of a sterile scale of the female fructification 
showing two small isolated groups of xylem outside the main bundles. x 300. 
Fig. 20. Transverse section of, presumably, an integumentary vascular bundle showing 
a tendency to amphivasal structure, x 300. 
