PLATE LIX. YELLOW OAK. 



1. Flowerius brauch witb immature leaves, (s) staminate blossoms, (p) pistillate blossoms, s i. 



2. Branch witb mature leaves and mature acorns, x i. 



3. An ao'^>rn, x J. 



4. An acorn cup, x i. 



5. Terminal section of winter twig, x i. . „ , -i 



6. Section of winter twig showing buds, lenticets, and leaf-scars with bundle-scarp, enlarged. 



