AN ANATOMICAL STUDY OF GYMNOSPORANGIUM GALLS 417 
Fig. 9. Similar to fig. 8, but from a deeper section in the gall. P, pith. Other 
lettering same as in fig. 8; X 14. 
Fig. 10. Diagrammatic drawing of a longitudinal section through a gall made 
at right angles to the ones shown in fig. 8 and 9. The figure shows a longitudinal 
view of the central cylinder at its point of entrance into the gall. K, cork layer. 
Other lettering same as in figures 8 and 9; X 14. 
Fig. II. Drawing of one of the gnarl-like complexes of cells in the gall, showing 
scalariform tracheids, parenchyma cells, and cells which are transitional between 
tracheids and parenchyma; X 200. 
Fig. 12. Drawing of a cross section of one of the xylem wedges in the gall with 
three rings of growth. Similar wedges are shown diagrammatically in figs. 9, 13, 
14, and 15; X 200. 
Fig. 13. Pushing outward of a portion of the woody part of the central cylinder 
in the gall preparatory to forming an accessory stem structure; X 14. 
Fig. 14. Similar to fig. 13, but showing a somewhat later stage; X 14. 
Fig. 15. Accessory stem structure near point of departure from main central 
cylinder in gall; X 14. 
