EXPLANATION OF THE PLATES. 



Plate CCCCXXIL Quercus palustris. 



1. A flowering branch, natural size. 



2. A staminate flower, enlarged. 



3. A pistillate inflorescence, enlarged. 



4. A pistillate flower, the involucre removed, 



enlarged. 



5. Vertical section of a pistillate flower before 



fecundation, enlarged. 



6. A leaf, natural size. 



7. A leaf, natural size. 



Plate CCCCXXIIL Quercus palustris. 



1. A fruiting branch, natural size. 



2. A cup, natural size. 



3. A seed, natural size. 



4. A winter branchlet, natural size. 



