294 TREES OF MINNESOTA. 
f x Wy 
Plate 34. Quercus macrocarpa. Bur Oak. 
1. Flowering branch, one-half natural size. > 
2. Vruiting branch, one- 
half natural size. 3. Staminate flower, enlarged, 4 Distillate inflores- 
cence, enlarged, 
