PLATE LV. WHITE OAK. 



1. Flowering branch with immature leaves (s) 



staminate blossoms, (p) pistillate blossoms, 

 X J. 



2. A staminate flower, enlarged. 



3. A pistillate flower, onlaij^cd. 



4. Branch witli mature leaves and mature 



acorns, x J. 



5. Acorn cup, x J. 



6. Acorn, basal view, i &. 



7. Longitudinal section of acoru showing em- 



bryo. X J. 



S. Germinating acorn with its young root and 



slioot, X S. 

 !). Winter branch, s J. 



] 0. Term inal section of winter branch showing 

 bud witli overlapping scales, a leaf-scar 

 with bundle-scars, and lentieels, enlarged. 

 11. <?ross section of twig showing pentangular 

 piili, wood with conspicuous medullary 

 rays, inner and outer bark, enlarged. 



