EXPLANATION OF THE PLATE. 



Plate CCCCXXVIIL Quercus nigra 



1. A flowering branch, natural size. 



2. A staminate flower, enlarged. 



3. A pistillate flower, enlarged. 



4. A fruiting branch, natural size. 



5. A leaf, natural size. 



6. A leaf, natural size. 



7. A leaf, natural size. 



8. A leaf, natural size. 



9. A winter branchlet, natural size. 



