EXPLANATION OF THE PLATES. 



Plate CCCCXXXV. Quercus Phellos. 



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 from a young vigorous shoot, natural size 



6. A winter branchlet, natural size. 



Plate CCCCXXXVI. Quercus Phellos x velutina (Quercus heterophylla) 



1. A flowering branch, natural size. 



2. A staminate flower, enlarged. 



3. A pistillate flower, enlarged. 



4. A fruiting branch, natural size. 



5. A winter branchlet, natural size. 



Plate CCCCXXXVI I. Quercus Phellos x Marilakdica (Quercus Rude:ini) 



1. A fruiting branch, natural size. 



2. A leaf, natural size. 



3. A leaf, natural si 



4. A leaf, natural size. 



