220 



TREES OF MINNESOTA. 



Plate 33. Quercus rubra. Red Oak. 



1. Flowering branch showing immature fruit of one year s growth, one-half 

 natural size. 2. Staminate flower, enlarged. 3. Pistillate flower, enlarged. 4. 

 Fruiting branch, one-half natural size. 5. Longitudinal section of fruit, one-half 

 natural size. 6. Cup, one-half natural size. 7. Mature leaf, one-half natural 

 size. 



