EXPLANATION OF THE PLATES 



Plate CCCLXXV. Quercus Prestus 



1. A flowering branch, natural size. 



2. A staminate flower, enlarged. 



3. A pistillate inflorescence, enlarged. 



4. A pistillate flower, enlarged. 



5. A leaf, natui'al size. 



Plate CCCLXXVI. Quercus Prijstus. 



1. A fruiting branch, natural size. 



2. A cup, natural size. 



3. Vertical section of a nut, natural size. 



4. A seed, natural size. 



5. Part of the base of a cup, enlarged. 



6. A winter branchlet, natural size. 



