PLATE LVI. POST OAK. 



1. P.raucli Willi iiiature leaves and mature acorns, si. -u 1 1 i 



2. Floweiiut: branch with immature leaves, <s) staminate blossoms, (p) pistillate hlosst.ms. x ^. 



3. An acorn cup, i 5- 



4. An acorn, basal view, x h- ^ i 



5. Lower surface view o£ mature leaf showing the dense star-shapeU pubescence, x *. 



6. Winter branch covered with a dense rusty pubescence, x S. i *- i 



7. Section of winter branch showing slishtly pubescent buds, leaf-scars with buniUe-scars. lenticeis- 



and the dense rusty pubescent bark, natural size. 



