PLATE LVI. POST OAK. 



1. Branch with mature leaves and mature acorns, x I. 



2. Flowering branch with immature leaves, (s) staminate blossoms, (p) pistillate blossoms, x J. 



3. An acorn cup, x J. 



4. An acorn, basal view, x 5. 



5. Lower surface view of mature leaf showing the dense star-shaped pubescence, x t. 



6. Winter branch covered with a dense rusty pubescence, x J. 



7. Section of winter branch showing slightly pubescent buds, leaf-scars with bundle-scars, lenticels. 



and the dense rusty pubescent bark, natural size. 



