PLATE LXVIII. BLACK JACK OAK. 



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



(i) immature acorns, s J. 



2. Branch with mntnre leaves, immature and mature acorns, x i. 



3. An acorn cup, x i- 



4. An acorn, x J. , *■ i 



5. Winter twii: with immature n«'orns. buds, and 1. j-scars, s *. 



6. Seitiiin of a winter twig, enlarged. 



( p) pistillate blossoms. 



