PLATE LXIII. PIN OAK. 



1. Flowering branch with immature leaves, (s) staminate blossoms, (p) pistillate blossoms, 



(i) immature acorns, x I. 



2. Branch with mature leaves, immature and mature acorns, x |. 



3. An acorn cup, x i. 



4. An acorn, x 1. 



5. Winter twig with immature acorns, buds, and one pin-like branchlet, x i. 



6. Winter branch with two pin-like branchlets, x |, 



7. Section of a winter branch, enlarged. 



